664375317 has 8 divisors (see below), whose sum is σ = 937941696. Its totient is φ = 416862912.

The previous prime is 664375301. The next prime is 664375331. The reversal of 664375317 is 713573466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 664375317 - 2⁴ = 664375301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664371317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6513433 + ... + 6513534.

It is an arithmetic number, because the mean of its divisors is an integer number (117242712).

Almost surely, 2^664375317 is an apocalyptic number.

It is an amenable number.

664375317 is a deficient number, since it is larger than the sum of its proper divisors (273566379).

664375317 is a wasteful number, since it uses less digits than its factorization.

664375317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13026987.

The product of its digits is 317520, while the sum is 42.

The square root of 664375317 is about 25775.4789868200. The cubic root of 664375317 is about 872.5784767522.

The spelling of 664375317 in words is "six hundred sixty-four million, three hundred seventy-five thousand, three hundred seventeen".