679402694256 has 160 divisors (see below), whose sum is σ = 2183255762688. Its totient is φ = 178863697920.

The previous prime is 679402694209. The next prime is 679402694293. The reversal of 679402694256 is 652496204976.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 679402694256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2794506 + ... + 3027881.

Almost surely, 2^679402694256 is an apocalyptic number.

679402694256 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

679402694256 is an abundant number, since it is smaller than the sum of its proper divisors (1503853068432).

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

679402694256 is a wasteful number, since it uses less digits than its factorization.

679402694256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822439 (or 5822433 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 60.

The spelling of 679402694256 in words is "six hundred seventy-nine billion, four hundred two million, six hundred ninety-four thousand, two hundred fifty-six".