679568880 has 80 divisors (see below), whose sum is σ = 2230598304. Its totient is φ = 170557440.

The previous prime is 679568849. The next prime is 679568917. The reversal of 679568880 is 88865976.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 679568880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79201 + ... + 87360.

Almost surely, 2^679568880 is an apocalyptic number.

679568880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

679568880 is an abundant number, since it is smaller than the sum of its proper divisors (1551029424).

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

679568880 is a wasteful number, since it uses less digits than its factorization.

679568880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166594 (or 166588 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The square root of 679568880 is about 26068.5419615290. The cubic root of 679568880 is about 879.1800558096.

The spelling of 679568880 in words is "six hundred seventy-nine million, five hundred sixty-eight thousand, eight hundred eighty".