688380574688 has 24 divisors (see below), whose sum is σ = 1357911860760. Its totient is φ = 343514070400.

The previous prime is 688380574667. The next prime is 688380574733. The reversal of 688380574688 is 886475083886.

688380574688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×688380574688² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 21115238 + ... + 21147813.

It is an arithmetic number, because the mean of its divisors is an integer number (56579660865).

Almost surely, 2^688380574688 is an apocalyptic number.

It is an amenable number.

688380574688 is a deficient number, since it is larger than the sum of its proper divisors (669531286072).

688380574688 is a wasteful number, since it uses less digits than its factorization.

688380574688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42263570 (or 42263562 counting only the distinct ones).

The product of its (nonzero) digits is 495452160, while the sum is 71.

The spelling of 688380574688 in words is "six hundred eighty-eight billion, three hundred eighty million, five hundred seventy-four thousand, six hundred eighty-eight".