664339199 has 8 divisors (see below), whose sum is σ = 729709440. Its totient is φ = 602009496.

The previous prime is 664339187. The next prime is 664339211. The reversal of 664339199 is 991933466.

It is an interprime number because it is at equal distance from previous prime (664339187) and next prime (664339211).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664339199 - 2⁸ = 664338943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664339099) 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 7 ways as a sum of consecutive naturals, for example, 759677 + ... + 760550.

It is an arithmetic number, because the mean of its divisors is an integer number (91213680).

Almost surely, 2^664339199 is an apocalyptic number.

664339199 is a deficient number, since it is larger than the sum of its proper divisors (65370241).

664339199 is a wasteful number, since it uses less digits than its factorization.

664339199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520269.

The product of its digits is 944784, while the sum is 50.

The square root of 664339199 is about 25774.7783501624. The cubic root of 664339199 is about 872.5626642239.

The spelling of 664339199 in words is "six hundred sixty-four million, three hundred thirty-nine thousand, one hundred ninety-nine".