686570697746 has 16 divisors (see below), whose sum is σ = 1074651508224. Its totient is φ = 328354059264.

The previous prime is 686570697737. The next prime is 686570697803. The reversal of 686570697746 is 647796075686.

It is a self number, because there is not a number n which added to its sum of digits gives 686570697746.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3627410 + ... + 3811986.

It is an arithmetic number, because the mean of its divisors is an integer number (67165719264).

Almost surely, 2^686570697746 is an apocalyptic number.

686570697746 is a deficient number, since it is larger than the sum of its proper divisors (388080810478).

686570697746 is a wasteful number, since it uses less digits than its factorization.

686570697746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265465.

The product of its (nonzero) digits is 640120320, while the sum is 71.

The spelling of 686570697746 in words is "six hundred eighty-six billion, five hundred seventy million, six hundred ninety-seven thousand, seven hundred forty-six".