680742208 has 28 divisors (see below), whose sum is σ = 1351991200. Its totient is φ = 340083072.

The previous prime is 680742187. The next prime is 680742263. The reversal of 680742208 is 802247086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85735 + ... + 93337.

It is an arithmetic number, because the mean of its divisors is an integer number (48285400).

Almost surely, 2^680742208 is an apocalyptic number.

It is an amenable number.

680742208 is a deficient number, since it is larger than the sum of its proper divisors (671248992).

680742208 is a wasteful number, since it uses less digits than its factorization.

680742208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9014 (or 9004 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 680742208 is about 26091.0369284166. The cubic root of 680742208 is about 879.6857555665.

The spelling of 680742208 in words is "six hundred eighty million, seven hundred forty-two thousand, two hundred eight".