664488412 has 48 divisors (see below), whose sum is σ = 1370353600. Its totient is φ = 281788416.

The previous prime is 664488371. The next prime is 664488421. The reversal of 664488412 is 214884466.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 130588 + ... + 135580.

Almost surely, 2^664488412 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 664488412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685176800).

664488412 is an abundant number, since it is smaller than the sum of its proper divisors (705865188).

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

664488412 is a wasteful number, since it uses less digits than its factorization.

664488412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115 (or 5099 counting only the distinct ones).

The product of its digits is 294912, while the sum is 43.

The square root of 664488412 is about 25777.6727421232. The cubic root of 664488412 is about 872.6279862495.

The spelling of 664488412 in words is "six hundred sixty-four million, four hundred eighty-eight thousand, four hundred twelve".