680984676 has 18 divisors (see below), whose sum is σ = 1721378022. Its totient is φ = 226994880.

The previous prime is 680984653. The next prime is 680984687. The reversal of 680984676 is 676489086.

It can be written as a sum of positive squares in only one way, i.e., 382593600 + 298391076 = 19560^2 + 17274^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9458085 + ... + 9458156.

Almost surely, 2^680984676 is an apocalyptic number.

It is an amenable number.

680984676 is an abundant number, since it is smaller than the sum of its proper divisors (1040393346).

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

680984676 is a wasteful number, since it uses less digits than its factorization.

680984676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18916251 (or 18916246 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 680984676 is about 26095.6830912701. The cubic root of 680984676 is about 879.7901858605.

The spelling of 680984676 in words is "six hundred eighty million, nine hundred eighty-four thousand, six hundred seventy-six".