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68610608 = 24113491117
BaseRepresentation
bin1000001011011…
…10101000110000
311210002210001122
410011232220300
5120031014413
610450321412
71462115633
oct405565060
9153083048
1068610608
1135802190
121ab89268
13112a32c1
14917dc1a
156054108
hex416ea30

68610608 has 40 divisors (see below), whose sum is σ = 145563600. Its totient is φ = 31069440.

The previous prime is 68610601. The next prime is 68610611. The reversal of 68610608 is 80601686.

It is not an unprimeable number, because it can be changed into a prime (68610601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60866 + ... + 61982.

It is an arithmetic number, because the mean of its divisors is an integer number (3639090).

Almost surely, 268610608 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 68610608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72781800).

68610608 is an abundant number, since it is smaller than the sum of its proper divisors (76952992).

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

68610608 is a wasteful number, since it uses less digits than its factorization.

68610608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 68610608 is about 8283.1520570372. The cubic root of 68610608 is about 409.3835829290.

The spelling of 68610608 in words is "sixty-eight million, six hundred ten thousand, six hundred eight".

Divisors: 1 2 4 8 11 16 22 44 88 176 349 698 1117 1396 2234 2792 3839 4468 5584 7678 8936 12287 15356 17872 24574 30712 49148 61424 98296 196592 389833 779666 1559332 3118664 4288163 6237328 8576326 17152652 34305304 68610608