664604315 has 4 divisors (see below), whose sum is σ = 797525184. Its totient is φ = 531683448.

The previous prime is 664604293. The next prime is 664604329. The reversal of 664604315 is 513406466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 664604315 - 2¹⁸ = 664342171 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 66460427 + ... + 66460436.

It is an arithmetic number, because the mean of its divisors is an integer number (199381296).

Almost surely, 2^664604315 is an apocalyptic number.

664604315 is a deficient number, since it is larger than the sum of its proper divisors (132920869).

664604315 is a wasteful number, since it uses less digits than its factorization.

664604315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132920868.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 664604315 is about 25779.9207717945. The cubic root of 664604315 is about 872.6787191741.

The spelling of 664604315 in words is "six hundred sixty-four million, six hundred four thousand, three hundred fifteen".