659980799 has 2 divisors, whose sum is σ = 659980800. Its totient is φ = 659980798.

The previous prime is 659980787. The next prime is 659980801. The reversal of 659980799 is 997089956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 659980799 - 2⁸ = 659980543 is a prime.

Together with 659980801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659980199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329990399 + 329990400.

It is an arithmetic number, because the mean of its divisors is an integer number (329990400).

Almost surely, 2^659980799 is an apocalyptic number.

659980799 is a deficient number, since it is larger than the sum of its proper divisors (1).

659980799 is an equidigital number, since it uses as much as digits as its factorization.

659980799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11022480, while the sum is 62.

The square root of 659980799 is about 25690.0914556566. The cubic root of 659980799 is about 870.6503258441.

The spelling of 659980799 in words is "six hundred fifty-nine million, nine hundred eighty thousand, seven hundred ninety-nine".