679966616628 has 120 divisors (see below), whose sum is σ = 1976055065600. Its totient is φ = 202471410240.

The previous prime is 679966616599. The next prime is 679966616653. The reversal of 679966616628 is 826616669976.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2473228 + ... + 2734371.

Almost surely, 2^679966616628 is an apocalyptic number.

It is an amenable number.

679966616628 is an abundant number, since it is smaller than the sum of its proper divisors (1296088448972).

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

679966616628 is a wasteful number, since it uses less digits than its factorization.

679966616628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207659 (or 5207648 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 72.

The spelling of 679966616628 in words is "six hundred seventy-nine billion, nine hundred sixty-six million, six hundred sixteen thousand, six hundred twenty-eight".