324663421 has 4 divisors (see below), whose sum is σ = 324851644. Its totient is φ = 324475200.

The previous prime is 324663413. The next prime is 324663487. The reversal of 324663421 is 124366423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124366423 = 103 ⋅1207441.

It can be written as a sum of positive squares in 2 ways, for example, as 14516100 + 310147321 = 3810^2 + 17611^2 .

It is a cyclic number.

It is not a de Polignac number, because 324663421 - 2³ = 324663413 is a prime.

It is a super-4 number, since 4×324663421⁴ (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 (324663121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91500 + ... + 94981.

It is an arithmetic number, because the mean of its divisors is an integer number (81212911).

Almost surely, 2^324663421 is an apocalyptic number.

It is an amenable number.

324663421 is a deficient number, since it is larger than the sum of its proper divisors (188223).

324663421 is a wasteful number, since it uses less digits than its factorization.

324663421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188222.

The product of its digits is 20736, while the sum is 31.

The square root of 324663421 is about 18018.4189372986. The cubic root of 324663421 is about 687.2970083239.

The spelling of 324663421 in words is "three hundred twenty-four million, six hundred sixty-three thousand, four hundred twenty-one".