680747605856 has 48 divisors (see below), whose sum is σ = 1360681474320. Its totient is φ = 335208192000.

The previous prime is 680747605843. The next prime is 680747605861. The reversal of 680747605856 is 658506747086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238700 + ... + 1190996.

It is an arithmetic number, because the mean of its divisors is an integer number (28347530715).

Almost surely, 2^680747605856 is an apocalyptic number.

It is an amenable number.

680747605856 is a deficient number, since it is larger than the sum of its proper divisors (679933868464).

680747605856 is a wasteful number, since it uses less digits than its factorization.

680747605856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952647 (or 952639 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 62.

The spelling of 680747605856 in words is "six hundred eighty billion, seven hundred forty-seven million, six hundred five thousand, eight hundred fifty-six".