680747346668 has 12 divisors (see below), whose sum is σ = 1229737142592. Its totient is φ = 329393877360.

The previous prime is 680747346533. The next prime is 680747346679. The reversal of 680747346668 is 866643747086.

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, 2744948855 + ... + 2744949102.

It is an arithmetic number, because the mean of its divisors is an integer number (102478095216).

Almost surely, 2^680747346668 is an apocalyptic number.

It is an amenable number.

680747346668 is a deficient number, since it is larger than the sum of its proper divisors (548989795924).

680747346668 is a wasteful number, since it uses less digits than its factorization.

680747346668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489897992 (or 5489897990 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 65.

The spelling of 680747346668 in words is "six hundred eighty billion, seven hundred forty-seven million, three hundred forty-six thousand, six hundred sixty-eight".