687789972576 has 96 divisors (see below), whose sum is σ = 2292633262080. Its totient is φ = 196511419008.

The previous prime is 687789972539. The next prime is 687789972581. The reversal of 687789972576 is 675279987786.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 687789972495 and 687789972504.

It is a congruent number.

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, 56854896 + ... + 56866991.

It is an arithmetic number, because the mean of its divisors is an integer number (23881596480).

Almost surely, 2^687789972576 is an apocalyptic number.

It is an amenable number.

687789972576 is an abundant number, since it is smaller than the sum of its proper divisors (1604843289504).

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

687789972576 is a wasteful number, since it uses less digits than its factorization.

687789972576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113721913 (or 113721899 counting only the distinct ones).

The product of its digits is 4480842240, while the sum is 81.

The spelling of 687789972576 in words is "six hundred eighty-seven billion, seven hundred eighty-nine million, nine hundred seventy-two thousand, five hundred seventy-six".