680916772699 has 2 divisors, whose sum is σ = 680916772700. Its totient is φ = 680916772698.

The previous prime is 680916772687. The next prime is 680916772717. The reversal of 680916772699 is 996277619086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680916772699 - 2⁹ = 680916772187 is a prime.

It is not a weakly prime, because it can be changed into another prime (680916772639) by changing a digit.

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 as a sum of consecutive naturals, namely, 340458386349 + 340458386350.

It is an arithmetic number, because the mean of its divisors is an integer number (340458386350).

Almost surely, 2^680916772699 is an apocalyptic number.

680916772699 is a deficient number, since it is larger than the sum of its proper divisors (1).

680916772699 is an equidigital number, since it uses as much as digits as its factorization.

680916772699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123451776, while the sum is 70.

The spelling of 680916772699 in words is "six hundred eighty billion, nine hundred sixteen million, seven hundred seventy-two thousand, six hundred ninety-nine".