664164324 has 36 divisors (see below), whose sum is σ = 1681352400. Its totient is φ = 221059440.

The previous prime is 664164311. The next prime is 664164331. The reversal of 664164324 is 423461466.

664164324 is a `hidden beast` number, since 6 + 6 + 4 + 1 + 643 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×664164324² = 882228498548753952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 11527 + ... + 38225.

Almost surely, 2^664164324 is an apocalyptic number.

It is an amenable number.

664164324 is an abundant number, since it is smaller than the sum of its proper divisors (1017188076).

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

664164324 is a wasteful number, since it uses less digits than its factorization.

664164324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27400 (or 27395 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 664164324 is about 25771.3857601798. The cubic root of 664164324 is about 872.4860955138.

The spelling of 664164324 in words is "six hundred sixty-four million, one hundred sixty-four thousand, three hundred twenty-four".