680409907 has 2 divisors, whose sum is σ = 680409908. Its totient is φ = 680409906.

The previous prime is 680409901. The next prime is 680409911. The reversal of 680409907 is 709904086.

680409907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680409907 - 2²³ = 672021299 is a prime.

It is not a weakly prime, because it can be changed into another prime (680409901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340204953 + 340204954.

It is an arithmetic number, because the mean of its divisors is an integer number (340204954).

Almost surely, 2^680409907 is an apocalyptic number.

680409907 is a deficient number, since it is larger than the sum of its proper divisors (1).

680409907 is an equidigital number, since it uses as much as digits as its factorization.

680409907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 680409907 is about 26084.6680446580. The cubic root of 680409907 is about 879.5425941609.

The spelling of 680409907 in words is "six hundred eighty million, four hundred nine thousand, nine hundred seven".