68735688 has 64 divisors (see below), whose sum is σ = 198912000. Its totient is φ = 19386432.

The previous prime is 68735659. The next prime is 68735701. The reversal of 68735688 is 88653786.

It is a self number, because there is not a number n which added to its sum of digits gives 68735688.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10683 + ... + 15861.

It is an arithmetic number, because the mean of its divisors is an integer number (3108000).

Almost surely, 2^68735688 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 68735688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99456000).

68735688 is an abundant number, since it is smaller than the sum of its proper divisors (130176312).

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

68735688 is a wasteful number, since it uses less digits than its factorization.

68735688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274 (or 5270 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 68735688 is about 8290.6988848950. The cubic root of 68735688 is about 409.6322063553.

It can be divided in two parts, 6873 and 5688, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 68735688 in words is "sixty-eight million, seven hundred thirty-five thousand, six hundred eighty-eight".