680660579 has 8 divisors (see below), whose sum is σ = 716863680. Its totient is φ = 644495400.

The previous prime is 680660549. The next prime is 680660623. The reversal of 680660579 is 975066086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680660579 - 2²⁸ = 412225123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680660549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32084 + ... + 48894.

It is an arithmetic number, because the mean of its divisors is an integer number (89607960).

Almost surely, 2^680660579 is an apocalyptic number.

680660579 is a deficient number, since it is larger than the sum of its proper divisors (36203101).

680660579 is a wasteful number, since it uses less digits than its factorization.

680660579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18961.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 680660579 is about 26089.4725703683. The cubic root of 680660579 is about 879.6505926037.

The spelling of 680660579 in words is "six hundred eighty million, six hundred sixty thousand, five hundred seventy-nine".