679888836 has 72 divisors (see below), whose sum is σ = 1937522720. Its totient is φ = 206022960.

The previous prime is 679888819. The next prime is 679888841. The reversal of 679888836 is 638888976.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12946 + ... + 39081.

Almost surely, 2^679888836 is an apocalyptic number.

679888836 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

679888836 is an abundant number, since it is smaller than the sum of its proper divisors (1257633884).

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

679888836 is a wasteful number, since it uses less digits than its factorization.

679888836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52062 (or 52043 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The square root of 679888836 is about 26074.6780612916. The cubic root of 679888836 is about 879.3180132738.

The spelling of 679888836 in words is "six hundred seventy-nine million, eight hundred eighty-eight thousand, eight hundred thirty-six".