680340704 has 12 divisors (see below), whose sum is σ = 1339420824. Its totient is φ = 340170336.

The previous prime is 680340679. The next prime is 680340709. The reversal of 680340704 is 407043086.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 21260647 = 680340704 / (6 + 8 + 0 + 3 + 4 + 0 + 7 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680340709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10630292 + ... + 10630355.

It is an arithmetic number, because the mean of its divisors is an integer number (111618402).

Almost surely, 2^680340704 is an apocalyptic number.

It is an amenable number.

680340704 is a deficient number, since it is larger than the sum of its proper divisors (659080120).

680340704 is a wasteful number, since it uses less digits than its factorization.

680340704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21260657 (or 21260649 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 680340704 is about 26083.3415037261. The cubic root of 680340704 is about 879.5127743669.

The spelling of 680340704 in words is "six hundred eighty million, three hundred forty thousand, seven hundred four".