680587415647 has 2 divisors, whose sum is σ = 680587415648. Its totient is φ = 680587415646.

The previous prime is 680587415633. The next prime is 680587415737. The reversal of 680587415647 is 746514785086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680587415647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680587415447) 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, 340293707823 + 340293707824.

It is an arithmetic number, because the mean of its divisors is an integer number (340293707824).

Almost surely, 2^680587415647 is an apocalyptic number.

680587415647 is a deficient number, since it is larger than the sum of its proper divisors (1).

680587415647 is an equidigital number, since it uses as much as digits as its factorization.

680587415647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 680587415647 in words is "six hundred eighty billion, five hundred eighty-seven million, four hundred fifteen thousand, six hundred forty-seven".