686382864724 has 36 divisors (see below), whose sum is σ = 1219241706592. Its totient is φ = 338072704560.

The previous prime is 686382864653. The next prime is 686382864751. The reversal of 686382864724 is 427468283686.

It is a super-2 number, since 2×686382864724² (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 11 ways as a sum of consecutive naturals, for example, 15007339 + ... + 15053005.

Almost surely, 2^686382864724 is an apocalyptic number.

It is an amenable number.

686382864724 is a deficient number, since it is larger than the sum of its proper divisors (532858841868).

686382864724 is a wasteful number, since it uses less digits than its factorization.

686382864724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46156 (or 45963 counting only the distinct ones).

The product of its digits is 148635648, while the sum is 64.

The spelling of 686382864724 in words is "six hundred eighty-six billion, three hundred eighty-two million, eight hundred sixty-four thousand, seven hundred twenty-four".