664252675 has 24 divisors (see below), whose sum is σ = 849601872. Its totient is φ = 514800000.

The previous prime is 664252643. The next prime is 664252681. The reversal of 664252675 is 576252466.

664252675 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664252675 - 2⁵ = 664252643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230745 + ... + 233605.

It is an arithmetic number, because the mean of its divisors is an integer number (35400078).

Almost surely, 2^664252675 is an apocalyptic number.

664252675 is a deficient number, since it is larger than the sum of its proper divisors (185349197).

664252675 is a wasteful number, since it uses less digits than its factorization.

664252675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159 (or 3154 counting only the distinct ones).

The product of its digits is 604800, while the sum is 43.

The square root of 664252675 is about 25773.0998329654. The cubic root of 664252675 is about 872.5247815229.

The spelling of 664252675 in words is "six hundred sixty-four million, two hundred fifty-two thousand, six hundred seventy-five".