680791264 has 12 divisors (see below), whose sum is σ = 1340307864. Its totient is φ = 340395616.

The previous prime is 680791249. The next prime is 680791273. The reversal of 680791264 is 462197086.

It is a self number, because there is not a number n which added to its sum of digits gives 680791264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10637332 + ... + 10637395.

It is an arithmetic number, because the mean of its divisors is an integer number (111692322).

Almost surely, 2^680791264 is an apocalyptic number.

It is an amenable number.

680791264 is a deficient number, since it is larger than the sum of its proper divisors (659516600).

680791264 is a wasteful number, since it uses less digits than its factorization.

680791264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21274737 (or 21274729 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 680791264 is about 26091.9770044357. The cubic root of 680791264 is about 879.7068858502.

The spelling of 680791264 in words is "six hundred eighty million, seven hundred ninety-one thousand, two hundred sixty-four".