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68698692 = 2234434931
BaseRepresentation
bin1000001100001…
…00001001000100
311210021020220000
410012010021010
5120041324232
610452241300
71462633506
oct406041104
9153236800
1068698692
1135862387
121b010230
131130441a
1491a3d76
15607027c
hex4184244

68698692 has 60 divisors (see below), whose sum is σ = 183805776. Its totient is φ = 22362480.

The previous prime is 68698691. The next prime is 68698703. The reversal of 68698692 is 29689686.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (68698691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11467 + ... + 16397.

Almost surely, 268698692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68698692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91902888).

68698692 is an abundant number, since it is smaller than the sum of its proper divisors (115107084).

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

68698692 is a wasteful number, since it uses less digits than its factorization.

68698692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990 (or 4979 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 68698692 is about 8288.4674095999. The cubic root of 68698692 is about 409.5587002757.

The spelling of 68698692 in words is "sixty-eight million, six hundred ninety-eight thousand, six hundred ninety-two".

Divisors: 1 2 3 4 6 9 12 18 27 36 43 54 81 86 108 129 162 172 258 324 387 516 774 1161 1548 2322 3483 4644 4931 6966 9862 13932 14793 19724 29586 44379 59172 88758 133137 177516 212033 266274 399411 424066 532548 636099 798822 848132 1272198 1597644 1908297 2544396 3816594 5724891 7633188 11449782 17174673 22899564 34349346 68698692