679928779805884 has 48 divisors (see below), whose sum is σ = 1397558495872000. Its totient is φ = 283378461581376.

The previous prime is 679928779805839. The next prime is 679928779806079. The reversal of 679928779805884 is 488508977829976.

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, 1232748084 + ... + 1233299515.

Almost surely, 2^{679928779805884} is an apocalyptic number.

It is an amenable number.

679928779805884 is an abundant number, since it is smaller than the sum of its proper divisors (717629716066116).

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

679928779805884 is a wasteful number, since it uses less digits than its factorization.

679928779805884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466047882 (or 2466047880 counting only the distinct ones).

The product of its (nonzero) digits is 245806202880, while the sum is 97.

The spelling of 679928779805884 in words is "six hundred seventy-nine trillion, nine hundred twenty-eight billion, seven hundred seventy-nine million, eight hundred five thousand, eight hundred eighty-four".