686646430692 has 48 divisors (see below), whose sum is σ = 1643715870720. Its totient is φ = 222975533088.

The previous prime is 686646430601. The next prime is 686646430733. The reversal of 686646430692 is 296034646686.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1539592 + ... + 1934847.

It is an arithmetic number, because the mean of its divisors is an integer number (34244080640).

Almost surely, 2^686646430692 is an apocalyptic number.

It is an amenable number.

686646430692 is an abundant number, since it is smaller than the sum of its proper divisors (957069440028).

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

686646430692 is a wasteful number, since it uses less digits than its factorization.

686646430692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474872 (or 3474870 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 60.

The spelling of 686646430692 in words is "six hundred eighty-six billion, six hundred forty-six million, four hundred thirty thousand, six hundred ninety-two".