679258940 has 12 divisors (see below), whose sum is σ = 1426443816. Its totient is φ = 271703568.

The previous prime is 679258927. The next prime is 679258991. The reversal of 679258940 is 49852976.

It is a happy number.

It is a super-2 number, since 2×679258940² = 922785415139847200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 16981454 + ... + 16981493.

It is an arithmetic number, because the mean of its divisors is an integer number (118870318).

Almost surely, 2^679258940 is an apocalyptic number.

It is an amenable number.

679258940 is an abundant number, since it is smaller than the sum of its proper divisors (747184876).

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

679258940 is a wasteful number, since it uses less digits than its factorization.

679258940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33962956 (or 33962954 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 679258940 is about 26062.5965705645. The cubic root of 679258940 is about 879.0463757116.

The spelling of 679258940 in words is "six hundred seventy-nine million, two hundred fifty-eight thousand, nine hundred forty".