679663808572 has 12 divisors (see below), whose sum is σ = 1359327617200. Its totient is φ = 291284489376.

The previous prime is 679663808531. The next prime is 679663808573. The reversal of 679663808572 is 275808366976.

679663808572 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 679663808498 and 679663808507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679663808573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12136853697 + ... + 12136853752.

Almost surely, 2^679663808572 is an apocalyptic number.

It is an amenable number.

679663808572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

679663808572 is a wasteful number, since it uses less digits than its factorization.

679663808572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24273707460 (or 24273707458 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 67.

The spelling of 679663808572 in words is "six hundred seventy-nine billion, six hundred sixty-three million, eight hundred eight thousand, five hundred seventy-two".