664504296 has 64 divisors (see below), whose sum is σ = 1762274880. Its totient is φ = 208081920.

The previous prime is 664504249. The next prime is 664504303. The reversal of 664504296 is 692405466.

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 15 ways as a sum of consecutive naturals, for example, 280750 + ... + 283106.

It is an arithmetic number, because the mean of its divisors is an integer number (27535545).

Almost surely, 2^664504296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664504296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881137440).

664504296 is an abundant number, since it is smaller than the sum of its proper divisors (1097770584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664504296 is a wasteful number, since it uses less digits than its factorization.

664504296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074 (or 3070 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 664504296 is about 25777.9808363650. The cubic root of 664504296 is about 872.6349393241.

The spelling of 664504296 in words is "six hundred sixty-four million, five hundred four thousand, two hundred ninety-six".