680806800962 has 18 divisors (see below), whose sum is σ = 1067583184563. Its totient is φ = 325590416932.

The previous prime is 680806800959. The next prime is 680806800991. The reversal of 680806800962 is 269008608086.

It can be written as a sum of positive squares in only one way, i.e., 340403400481 + 340403400481 = 583441^2 + 583441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=583441.

It is a super-2 number, since 2×680806800962² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26825603 + ... + 26850969.

Almost surely, 2^680806800962 is an apocalyptic number.

680806800962 is a deficient number, since it is larger than the sum of its proper divisors (386776383601).

680806800962 is an frugal number, since it uses more digits than its factorization.

680806800962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50782 (or 25392 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 680806800962 in words is "six hundred eighty billion, eight hundred six million, eight hundred thousand, nine hundred sixty-two".