680886165992 has 16 divisors (see below), whose sum is σ = 1276674561540. Its totient is φ = 340439616256.

The previous prime is 680886165983. The next prime is 680886166031. The reversal of 680886165992 is 299561688086.

It can be written as a sum of positive squares in 2 ways, for example, as 620701319716 + 60184846276 = 787846^2 + 245326^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526418 + ... + 1280190.

Almost surely, 2^680886165992 is an apocalyptic number.

It is an amenable number.

680886165992 is a deficient number, since it is larger than the sum of its proper divisors (595788395548).

680886165992 is a wasteful number, since it uses less digits than its factorization.

680886165992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866692 (or 866688 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 68.

The spelling of 680886165992 in words is "six hundred eighty billion, eight hundred eighty-six million, one hundred sixty-five thousand, nine hundred ninety-two".