679379780 has 12 divisors (see below), whose sum is σ = 1426697580. Its totient is φ = 271751904.

The previous prime is 679379777. The next prime is 679379821. The reversal of 679379780 is 87973976.

It can be written as a sum of positive squares in 2 ways, for example, as 476374276 + 203005504 = 21826^2 + 14248^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16984475 + ... + 16984514.

It is an arithmetic number, because the mean of its divisors is an integer number (118891465).

Almost surely, 2^679379780 is an apocalyptic number.

It is an amenable number.

679379780 is an abundant number, since it is smaller than the sum of its proper divisors (747317800).

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

679379780 is a wasteful number, since it uses less digits than its factorization.

679379780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33968998 (or 33968996 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 56.

The square root of 679379780 is about 26064.9147322603. The cubic root of 679379780 is about 879.0984999994.

The spelling of 679379780 in words is "six hundred seventy-nine million, three hundred seventy-nine thousand, seven hundred eighty".