680070899 has 2 divisors, whose sum is σ = 680070900. Its totient is φ = 680070898.

The previous prime is 680070893. The next prime is 680070913. The reversal of 680070899 is 998070086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680070899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (680070893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340035449 + 340035450.

It is an arithmetic number, because the mean of its divisors is an integer number (340035450).

Almost surely, 2^680070899 is an apocalyptic number.

680070899 is a deficient number, since it is larger than the sum of its proper divisors (1).

680070899 is an equidigital number, since it uses as much as digits as its factorization.

680070899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 680070899 is about 26078.1690116465. The cubic root of 680070899 is about 879.3964952153.

The spelling of 680070899 in words is "six hundred eighty million, seventy thousand, eight hundred ninety-nine".