664104165 has 32 divisors (see below), whose sum is σ = 1110122496. Its totient is φ = 338614080.

The previous prime is 664104149. The next prime is 664104187. The reversal of 664104165 is 561401466.

It is a happy number.

It is not a de Polignac number, because 664104165 - 2⁴ = 664104149 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 31 ways as a sum of consecutive naturals, for example, 29992 + ... + 47198.

It is an arithmetic number, because the mean of its divisors is an integer number (34691328).

Almost surely, 2^664104165 is an apocalyptic number.

It is an amenable number.

664104165 is a deficient number, since it is larger than the sum of its proper divisors (446018331).

664104165 is a wasteful number, since it uses less digits than its factorization.

664104165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17329.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 664104165 is about 25770.2185671756. The cubic root of 664104165 is about 872.4597518947.

The spelling of 664104165 in words is "six hundred sixty-four million, one hundred four thousand, one hundred sixty-five".