686376864536 has 16 divisors (see below), whose sum is σ = 1403952677640. Its totient is φ = 311989483840.

The previous prime is 686376864521. The next prime is 686376864541. The reversal of 686376864536 is 635468673686.

It is a super-2 number, since 2×686376864536² (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, 3899868461 + ... + 3899868636.

Almost surely, 2^686376864536 is an apocalyptic number.

It is an amenable number.

686376864536 is an abundant number, since it is smaller than the sum of its proper divisors (717575813104).

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

686376864536 is a wasteful number, since it uses less digits than its factorization.

686376864536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799737114 (or 7799737110 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 68.

The spelling of 686376864536 in words is "six hundred eighty-six billion, three hundred seventy-six million, eight hundred sixty-four thousand, five hundred thirty-six".