680565299 has 2 divisors, whose sum is σ = 680565300. Its totient is φ = 680565298.

The previous prime is 680565287. The next prime is 680565307. The reversal of 680565299 is 992565086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680565299 - 2²⁰ = 679516723 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (680565269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340282649 + 340282650.

It is an arithmetic number, because the mean of its divisors is an integer number (340282650).

Almost surely, 2^680565299 is an apocalyptic number.

680565299 is a deficient number, since it is larger than the sum of its proper divisors (1).

680565299 is an equidigital number, since it uses as much as digits as its factorization.

680565299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 680565299 is about 26087.6464825787. The cubic root of 680565299 is about 879.6095457040.

The spelling of 680565299 in words is "six hundred eighty million, five hundred sixty-five thousand, two hundred ninety-nine".