664013059 has 4 divisors (see below), whose sum is σ = 692883216. Its totient is φ = 635142904.

The previous prime is 664013041. The next prime is 664013099. The reversal of 664013059 is 950310466.

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 664013059 - 2²³ = 655624451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664013099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14435044 + ... + 14435089.

It is an arithmetic number, because the mean of its divisors is an integer number (173220804).

Almost surely, 2^664013059 is an apocalyptic number.

664013059 is a deficient number, since it is larger than the sum of its proper divisors (28870157).

664013059 is a wasteful number, since it uses less digits than its factorization.

664013059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28870156.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 664013059 is about 25768.4508459473. The cubic root of 664013059 is about 872.4198535588.

The spelling of 664013059 in words is "six hundred sixty-four million, thirteen thousand, fifty-nine".