664759759 has 2 divisors, whose sum is σ = 664759760. Its totient is φ = 664759758.

The previous prime is 664759703. The next prime is 664759807. The reversal of 664759759 is 957957466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664759759 - 2²³ = 656371151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664750759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332379879 + 332379880.

It is an arithmetic number, because the mean of its divisors is an integer number (332379880).

Almost surely, 2^664759759 is an apocalyptic number.

664759759 is a deficient number, since it is larger than the sum of its proper divisors (1).

664759759 is an equidigital number, since it uses as much as digits as its factorization.

664759759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14288400, while the sum is 58.

The square root of 664759759 is about 25782.9354224844. The cubic root of 664759759 is about 872.7467506796.

The spelling of 664759759 in words is "six hundred sixty-four million, seven hundred fifty-nine thousand, seven hundred fifty-nine".