664365475 has 12 divisors (see below), whose sum is σ = 824201464. Its totient is φ = 531241920.

The previous prime is 664365467. The next prime is 664365497. The reversal of 664365475 is 574563466.

It is not a de Polignac number, because 664365475 - 2³ = 664365467 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62767 + ... + 72583.

Almost surely, 2^664365475 is an apocalyptic number.

664365475 is a deficient number, since it is larger than the sum of its proper divisors (159835989).

664365475 is a wasteful number, since it uses less digits than its factorization.

664365475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12534 (or 12529 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 46.

The square root of 664365475 is about 25775.2880682253. The cubic root of 664365475 is about 872.5741679629.

The spelling of 664365475 in words is "six hundred sixty-four million, three hundred sixty-five thousand, four hundred seventy-five".