664160504 has 64 divisors (see below), whose sum is σ = 1528800000. Its totient is φ = 269637984.

The previous prime is 664160477. The next prime is 664160509. The reversal of 664160504 is 405061466.

664160504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×664160504² = 882218350147068032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664160509) 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, 45767 + ... + 58505.

It is an arithmetic number, because the mean of its divisors is an integer number (23887500).

Almost surely, 2^664160504 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 664160504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764400000).

664160504 is an abundant number, since it is smaller than the sum of its proper divisors (864639496).

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

664160504 is a wasteful number, since it uses less digits than its factorization.

664160504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785 (or 12767 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 664160504 is about 25771.3116468681. The cubic root of 664160504 is about 872.4844227836.

The spelling of 664160504 in words is "six hundred sixty-four million, one hundred sixty thousand, five hundred four".