679987252 has 24 divisors (see below), whose sum is σ = 1382272640. Its totient is φ = 286644960.

The previous prime is 679987177. The next prime is 679987261. The reversal of 679987252 is 252789976.

It is a junction number, because it is equal to n+sod(n) for n = 679987193 and 679987202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197352 + ... + 200767.

Almost surely, 2^679987252 is an apocalyptic number.

It is an amenable number.

679987252 is an abundant number, since it is smaller than the sum of its proper divisors (702285388).

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

679987252 is a wasteful number, since it uses less digits than its factorization.

679987252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398191 (or 398189 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The square root of 679987252 is about 26076.5651879230. The cubic root of 679987252 is about 879.3604392223.

The spelling of 679987252 in words is "six hundred seventy-nine million, nine hundred eighty-seven thousand, two hundred fifty-two".