680064208 has 20 divisors (see below), whose sum is σ = 1339958880. Its totient is φ = 334268384.

The previous prime is 680064191. The next prime is 680064289. The reversal of 680064208 is 802460086.

It is a congruent number.

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, 359260 + ... + 361147.

It is an arithmetic number, because the mean of its divisors is an integer number (66997944).

Almost surely, 2^680064208 is an apocalyptic number.

It is an amenable number.

680064208 is a deficient number, since it is larger than the sum of its proper divisors (659894672).

680064208 is a wasteful number, since it uses less digits than its factorization.

680064208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720474 (or 720468 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 680064208 is about 26078.0407239501. The cubic root of 680064208 is about 879.3936111723.

The spelling of 680064208 in words is "six hundred eighty million, sixty-four thousand, two hundred eight".