679859844 has 12 divisors (see below), whose sum is σ = 1586339664. Its totient is φ = 226619944.

The previous prime is 679859837. The next prime is 679859857. The reversal of 679859844 is 448958976.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28327482 + ... + 28327505.

It is an arithmetic number, because the mean of its divisors is an integer number (132194972).

Almost surely, 2^679859844 is an apocalyptic number.

It is an amenable number.

679859844 is an abundant number, since it is smaller than the sum of its proper divisors (906479820).

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

679859844 is a wasteful number, since it uses less digits than its factorization.

679859844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56654994 (or 56654992 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The square root of 679859844 is about 26074.1221136973. The cubic root of 679859844 is about 879.3055143922.

The spelling of 679859844 in words is "six hundred seventy-nine million, eight hundred fifty-nine thousand, eight hundred forty-four".