68402688 has 40 divisors (see below), whose sum is σ = 182233128. Its totient is φ = 22800384.

The previous prime is 68402681. The next prime is 68402689. The reversal of 68402688 is 88620486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68402681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20731 + ... + 23802.

Almost surely, 2^68402688 is an apocalyptic number.

It is an amenable number.

68402688 is an abundant number, since it is smaller than the sum of its proper divisors (113830440).

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

68402688 is an equidigital number, since it uses as much as digits as its factorization.

68402688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44554 (or 44538 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 68402688 is about 8270.5917563376. The cubic root of 68402688 is about 408.9696276886.

The spelling of 68402688 in words is "sixty-eight million, four hundred two thousand, six hundred eighty-eight".