324201621 has 16 divisors (see below), whose sum is σ = 436253120. Its totient is φ = 214151040.

The previous prime is 324201613. The next prime is 324201623. The reversal of 324201621 is 126102423.

It is not a de Polignac number, because 324201621 - 2³ = 324201613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324201623) 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, 199191 + ... + 200811.

It is an arithmetic number, because the mean of its divisors is an integer number (27265820).

Almost surely, 2^324201621 is an apocalyptic number.

It is an amenable number.

324201621 is a deficient number, since it is larger than the sum of its proper divisors (112051499).

324201621 is a wasteful number, since it uses less digits than its factorization.

324201621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 324201621 is about 18005.5997123117. The cubic root of 324201621 is about 686.9709841570.

The spelling of 324201621 in words is "three hundred twenty-four million, two hundred one thousand, six hundred twenty-one".