664486975 has 12 divisors (see below), whose sum is σ = 825424600. Its totient is φ = 530647200.

The previous prime is 664486967. The next prime is 664486993. The reversal of 664486975 is 579684466.

It is not a de Polignac number, because 664486975 - 2³ = 664486967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9000 + ... + 37549.

Almost surely, 2^664486975 is an apocalyptic number.

664486975 is a deficient number, since it is larger than the sum of its proper divisors (160937625).

664486975 is a wasteful number, since it uses less digits than its factorization.

664486975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47130 (or 47125 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The square root of 664486975 is about 25777.6448691497. The cubic root of 664486975 is about 872.6273572105.

The spelling of 664486975 in words is "six hundred sixty-four million, four hundred eighty-six thousand, nine hundred seventy-five".