680674739 has 2 divisors, whose sum is σ = 680674740. Its totient is φ = 680674738.

The previous prime is 680674723. The next prime is 680674769. The reversal of 680674739 is 937476086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680674739 - 2⁴ = 680674723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (680674769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340337369 + 340337370.

It is an arithmetic number, because the mean of its divisors is an integer number (340337370).

Almost surely, 2^680674739 is an apocalyptic number.

680674739 is a deficient number, since it is larger than the sum of its proper divisors (1).

680674739 is an equidigital number, since it uses as much as digits as its factorization.

680674739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The square root of 680674739 is about 26089.7439427833. The cubic root of 680674739 is about 879.6566924457.

The spelling of 680674739 in words is "six hundred eighty million, six hundred seventy-four thousand, seven hundred thirty-nine".