664455704723087 has 2 divisors, whose sum is σ = 664455704723088. Its totient is φ = 664455704723086.

The previous prime is 664455704722973. The next prime is 664455704723137. The reversal of 664455704723087 is 780327407554466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664455704723087 - 2²⁸ = 664455436287631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664455704723887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332227852361543 + 332227852361544.

It is an arithmetic number, because the mean of its divisors is an integer number (332227852361544).

Almost surely, 2^{664455704723087} is an apocalyptic number.

664455704723087 is a deficient number, since it is larger than the sum of its proper divisors (1).

664455704723087 is an equidigital number, since it uses as much as digits as its factorization.

664455704723087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 948326400, while the sum is 68.

The spelling of 664455704723087 in words is "six hundred sixty-four trillion, four hundred fifty-five billion, seven hundred four million, seven hundred twenty-three thousand, eighty-seven".