686057627998 has 32 divisors (see below), whose sum is σ = 1084832481600. Its totient is φ = 324969258240.

The previous prime is 686057627953. The next prime is 686057628007. The reversal of 686057627998 is 899726750686.

It is a self number, because there is not a number n which added to its sum of digits gives 686057627998.

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, 1301328 + ... + 1750876.

It is an arithmetic number, because the mean of its divisors is an integer number (33901015050).

Almost surely, 2^686057627998 is an apocalyptic number.

686057627998 is a deficient number, since it is larger than the sum of its proper divisors (398774853602).

686057627998 is a wasteful number, since it uses less digits than its factorization.

686057627998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450132.

The product of its (nonzero) digits is 548674560, while the sum is 73.

The spelling of 686057627998 in words is "six hundred eighty-six billion, fifty-seven million, six hundred twenty-seven thousand, nine hundred ninety-eight".