326564421 has 4 divisors (see below), whose sum is σ = 435419232. Its totient is φ = 217709612.

The previous prime is 326564417. The next prime is 326564437. The reversal of 326564421 is 124465623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124465623 = 3 ⋅41488541.

It is a cyclic number.

It is not a de Polignac number, because 326564421 - 2² = 326564417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326564461) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54427401 + ... + 54427406.

It is an arithmetic number, because the mean of its divisors is an integer number (108854808).

Almost surely, 2^326564421 is an apocalyptic number.

It is an amenable number.

326564421 is a deficient number, since it is larger than the sum of its proper divisors (108854811).

326564421 is a wasteful number, since it uses less digits than its factorization.

326564421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108854810.

The product of its digits is 34560, while the sum is 33.

The square root of 326564421 is about 18071.0935197624. The cubic root of 326564421 is about 688.6358407987.

The spelling of 326564421 in words is "three hundred twenty-six million, five hundred sixty-four thousand, four hundred twenty-one".