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68496064 = 2671319619
BaseRepresentation
bin1000001010100…
…10101011000000
311202212221221021
410011102223000
5120013333224
610444035224
71461130660
oct405225300
9152787837
1068496064
113573411a
121ab32b14
1311263120
1491501a0
1560301e4
hex4152ac0

68496064 has 112 divisors (see below), whose sum is σ = 176377600. Its totient is φ = 25629696.

The previous prime is 68496059. The next prime is 68496067. The reversal of 68496064 is 46069486.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×684960643 (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68496064.

It is not an unprimeable number, because it can be changed into a prime (68496067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110347 + ... + 110965.

It is an arithmetic number, because the mean of its divisors is an integer number (1574800).

Almost surely, 268496064 is an apocalyptic number.

68496064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68496064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88188800).

68496064 is an abundant number, since it is smaller than the sum of its proper divisors (107881536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68496064 is a wasteful number, since it uses less digits than its factorization.

68496064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 68496064 is about 8276.2348927517. The cubic root of 68496064 is about 409.1556368721.

The spelling of 68496064 in words is "sixty-eight million, four hundred ninety-six thousand, sixty-four".

Divisors: 1 2 4 7 8 13 14 16 19 26 28 32 38 52 56 64 76 91 104 112 133 152 182 208 224 247 266 304 364 416 448 494 532 608 619 728 832 988 1064 1216 1238 1456 1729 1976 2128 2476 2912 3458 3952 4256 4333 4952 5824 6916 7904 8047 8512 8666 9904 11761 13832 15808 16094 17332 19808 23522 27664 32188 34664 39616 47044 55328 56329 64376 69328 82327 94088 110656 112658 128752 138656 152893 164654 188176 225316 257504 277312 305786 329308 376352 450632 515008 611572 658616 752704 901264 1070251 1223144 1317232 1802528 2140502 2446288 2634464 3605056 4281004 4892576 5268928 8562008 9785152 17124016 34248032 68496064