688665058732 has 12 divisors (see below), whose sum is σ = 1377330117520. Its totient is φ = 295142168016.

The previous prime is 688665058727. The next prime is 688665058777. The reversal of 688665058732 is 237850566886.

688665058732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

688665058732 is an admirable number.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12297590307 + ... + 12297590362.

Almost surely, 2^688665058732 is an apocalyptic number.

It is an amenable number.

688665058732 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

688665058732 is a wasteful number, since it uses less digits than its factorization.

688665058732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24595180680 (or 24595180678 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 64.

The spelling of 688665058732 in words is "six hundred eighty-eight billion, six hundred sixty-five million, fifty-eight thousand, seven hundred thirty-two".