679776677964 has 18 divisors (see below), whose sum is σ = 1718324380500. Its totient is φ = 226592225976.

The previous prime is 679776677963. The next prime is 679776678029. The reversal of 679776677964 is 469776677976.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (679776677963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9441342714 + ... + 9441342785.

Almost surely, 2^679776677964 is an apocalyptic number.

It is an amenable number.

679776677964 is an abundant number, since it is smaller than the sum of its proper divisors (1038547702536).

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

679776677964 is a wasteful number, since it uses less digits than its factorization.

679776677964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18882685509 (or 18882685504 counting only the distinct ones).

The product of its digits is 7057326528, while the sum is 81.

The spelling of 679776677964 in words is "six hundred seventy-nine billion, seven hundred seventy-six million, six hundred seventy-seven thousand, nine hundred sixty-four".