680730907 has 2 divisors, whose sum is σ = 680730908. Its totient is φ = 680730906.

The previous prime is 680730877. The next prime is 680730923. The reversal of 680730907 is 709037086.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680730907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 680730907.

It is not a weakly prime, because it can be changed into another prime (680730997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340365453 + 340365454.

It is an arithmetic number, because the mean of its divisors is an integer number (340365454).

Almost surely, 2^680730907 is an apocalyptic number.

680730907 is a deficient number, since it is larger than the sum of its proper divisors (1).

680730907 is an equidigital number, since it uses as much as digits as its factorization.

680730907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 680730907 is about 26090.8203588925. The cubic root of 680730907 is about 879.6808876525.

The spelling of 680730907 in words is "six hundred eighty million, seven hundred thirty thousand, nine hundred seven".