664383599 has 16 divisors (see below), whose sum is σ = 752815104. Its totient is φ = 580867200.

The previous prime is 664383593. The next prime is 664383619. The reversal of 664383599 is 995383466.

It is a cyclic number.

It is not a de Polignac number, because 664383599 - 2¹² = 664379503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664383599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664383593) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 49607 + ... + 61559.

It is an arithmetic number, because the mean of its divisors is an integer number (47050944).

Almost surely, 2^664383599 is an apocalyptic number.

664383599 is a deficient number, since it is larger than the sum of its proper divisors (88431505).

664383599 is a wasteful number, since it uses less digits than its factorization.

664383599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12158.

The product of its digits is 4199040, while the sum is 53.

The square root of 664383599 is about 25775.6396428876. The cubic root of 664383599 is about 872.5821025466.

The spelling of 664383599 in words is "six hundred sixty-four million, three hundred eighty-three thousand, five hundred ninety-nine".