326621613 has 4 divisors (see below), whose sum is σ = 435495488. Its totient is φ = 217747740.

The previous prime is 326621599. The next prime is 326621623. The reversal of 326621613 is 316126623.

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.

It is not a de Polignac number, because 326621613 - 2¹⁰ = 326620589 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 (326621623) 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 3 ways as a sum of consecutive naturals, for example, 54436933 + ... + 54436938.

It is an arithmetic number, because the mean of its divisors is an integer number (108873872).

Almost surely, 2^326621613 is an apocalyptic number.

It is an amenable number.

326621613 is a deficient number, since it is larger than the sum of its proper divisors (108873875).

326621613 is a wasteful number, since it uses less digits than its factorization.

326621613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108873874.

The product of its digits is 7776, while the sum is 30.

The square root of 326621613 is about 18072.6758671758. The cubic root of 326621613 is about 688.6760392604.

The spelling of 326621613 in words is "three hundred twenty-six million, six hundred twenty-one thousand, six hundred thirteen".