664392484 has 48 divisors (see below), whose sum is σ = 1363824000. Its totient is φ = 277272576.

The previous prime is 664392481. The next prime is 664392497. The reversal of 664392484 is 484293466.

664392484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (664392481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539982 + ... + 541210.

It is an arithmetic number, because the mean of its divisors is an integer number (28413000).

Almost surely, 2^664392484 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 664392484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681912000).

664392484 is an abundant number, since it is smaller than the sum of its proper divisors (699431516).

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

664392484 is a wasteful number, since it uses less digits than its factorization.

664392484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1730 counting only the distinct ones).

The product of its digits is 995328, while the sum is 46.

The square root of 664392484 is about 25775.8119949692. The cubic root of 664392484 is about 872.5859922962.

The spelling of 664392484 in words is "six hundred sixty-four million, three hundred ninety-two thousand, four hundred eighty-four".