686336584608 has 120 divisors (see below), whose sum is σ = 2020719476160. Its totient is φ = 228526945920.

The previous prime is 686336584601. The next prime is 686336584627. The reversal of 686336584608 is 806485633686.

686336584608 is a `hidden beast` number, since 6 + 86 + 33 + 65 + 8 + 460 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (686336584601) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2215983 + ... + 2506641.

It is an arithmetic number, because the mean of its divisors is an integer number (16839328968).

Almost surely, 2^686336584608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686336584608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010359738080).

686336584608 is an abundant number, since it is smaller than the sum of its proper divisors (1334382891552).

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

686336584608 is a wasteful number, since it uses less digits than its factorization.

686336584608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291592 (or 291575 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 686336584608 in words is "six hundred eighty-six billion, three hundred thirty-six million, five hundred eighty-four thousand, six hundred eight".