324664221 has 16 divisors (see below), whose sum is σ = 496521344. Its totient is φ = 184849344.

The previous prime is 324664189. The next prime is 324664237. The reversal of 324664221 is 122466423.

It is not a de Polignac number, because 324664221 - 2⁵ = 324664189 is a prime.

It is a super-4 number, since 4×324664221⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324664261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22090 + ... + 33723.

It is an arithmetic number, because the mean of its divisors is an integer number (31032584).

Almost surely, 2^324664221 is an apocalyptic number.

It is an amenable number.

324664221 is a deficient number, since it is larger than the sum of its proper divisors (171857123).

324664221 is a wasteful number, since it uses less digits than its factorization.

324664221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56100.

The product of its digits is 13824, while the sum is 30.

The square root of 324664221 is about 18018.4411367909. The cubic root of 324664221 is about 687.2975728441.

It can be divided in two parts, 32466422 and 1, that added together give a palindrome (32466423).

The spelling of 324664221 in words is "three hundred twenty-four million, six hundred sixty-four thousand, two hundred twenty-one".