664676599 has 2 divisors, whose sum is σ = 664676600. Its totient is φ = 664676598.

The previous prime is 664676587. The next prime is 664676603. The reversal of 664676599 is 995676466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664676599 - 2²³ = 656287991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664676099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332338299 + 332338300.

It is an arithmetic number, because the mean of its divisors is an integer number (332338300).

Almost surely, 2^664676599 is an apocalyptic number.

664676599 is a deficient number, since it is larger than the sum of its proper divisors (1).

664676599 is an equidigital number, since it uses as much as digits as its factorization.

664676599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 58.

The square root of 664676599 is about 25781.3226774733. The cubic root of 664676599 is about 872.7103562552.

The spelling of 664676599 in words is "six hundred sixty-four million, six hundred seventy-six thousand, five hundred ninety-nine".