687632563875 has 32 divisors (see below), whose sum is σ = 1144432021824. Its totient is φ = 366669600000.

The previous prime is 687632563843. The next prime is 687632563939. The reversal of 687632563875 is 578365236786.

It is not a de Polignac number, because 687632563875 - 2⁵ = 687632563843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1896207 + ... + 2229543.

It is an arithmetic number, because the mean of its divisors is an integer number (35763500682).

Almost surely, 2^687632563875 is an apocalyptic number.

687632563875 is a deficient number, since it is larger than the sum of its proper divisors (456799457949).

687632563875 is a wasteful number, since it uses less digits than its factorization.

687632563875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338856 (or 338846 counting only the distinct ones).

The product of its digits is 304819200, while the sum is 66.

The spelling of 687632563875 in words is "six hundred eighty-seven billion, six hundred thirty-two million, five hundred sixty-three thousand, eight hundred seventy-five".