686594204464 has 40 divisors (see below), whose sum is σ = 1569358189568. Its totient is φ = 284762571840.

The previous prime is 686594204437. The next prime is 686594204503. The reversal of 686594204464 is 464402495686.

It is a junction number, because it is equal to n+sod(n) for n = 686594204399 and 686594204408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98872422 + ... + 98879365.

Almost surely, 2^686594204464 is an apocalyptic number.

It is an amenable number.

686594204464 is an abundant number, since it is smaller than the sum of its proper divisors (882763985104).

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

686594204464 is a wasteful number, since it uses less digits than its factorization.

686594204464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197751833 (or 197751827 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 58.

The spelling of 686594204464 in words is "six hundred eighty-six billion, five hundred ninety-four million, two hundred four thousand, four hundred sixty-four".