688560688564 has 12 divisors (see below), whose sum is σ = 1377121377184. Its totient is φ = 295097437944.

The previous prime is 688560688547. The next prime is 688560688591. The reversal of 688560688564 is 465886065886.

688560688564 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 688560688493 and 688560688502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12295726554 + ... + 12295726609.

Almost surely, 2^688560688564 is an apocalyptic number.

It is an amenable number.

688560688564 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.

688560688564 is a wasteful number, since it uses less digits than its factorization.

688560688564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24591453174 (or 24591453172 counting only the distinct ones).

The product of its (nonzero) digits is 530841600, while the sum is 70.

The spelling of 688560688564 in words is "six hundred eighty-eight billion, five hundred sixty million, six hundred eighty-eight thousand, five hundred sixty-four".