680673836 has 12 divisors (see below), whose sum is σ = 1192332960. Its totient is φ = 340007280.

The previous prime is 680673823. The next prime is 680673911. The reversal of 680673836 is 638376086.

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, 77735 + ... + 86046.

It is an arithmetic number, because the mean of its divisors is an integer number (99361080).

Almost surely, 2^680673836 is an apocalyptic number.

It is an amenable number.

680673836 is a deficient number, since it is larger than the sum of its proper divisors (511659124).

680673836 is a wasteful number, since it uses less digits than its factorization.

680673836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164824 (or 164822 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 680673836 is about 26089.7266371267. The cubic root of 680673836 is about 879.6563034541.

The spelling of 680673836 in words is "six hundred eighty million, six hundred seventy-three thousand, eight hundred thirty-six".