679406133920 has 24 divisors (see below), whose sum is σ = 1605096991764. Its totient is φ = 271762453504.

The previous prime is 679406133841. The next prime is 679406133937. The reversal of 679406133920 is 29331604976.

It can be written as a sum of positive squares in 2 ways, for example, as 672813343504 + 6592790416 = 820252^2 + 81196^2 .

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 3 ways as a sum of consecutive naturals, for example, 2123144009 + ... + 2123144328.

Almost surely, 2^679406133920 is an apocalyptic number.

It is an amenable number.

679406133920 is an abundant number, since it is smaller than the sum of its proper divisors (925690857844).

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

679406133920 is a wasteful number, since it uses less digits than its factorization.

679406133920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246288352 (or 4246288344 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 679406133920 in words is "six hundred seventy-nine billion, four hundred six million, one hundred thirty-three thousand, nine hundred twenty".