3321664609 has 4 divisors (see below), whose sum is σ = 3321812116. Its totient is φ = 3321517104.

The previous prime is 3321664571. The next prime is 3321664627. The reversal of 3321664609 is 9064661233.

3321664609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1931866209 + 1389798400 = 43953^2 + 37280^2 .

It is a cyclic number.

It is not a de Polignac number, because 3321664609 - 2²¹ = 3319567457 is a prime.

It is a super-2 number, since 2×3321664609² = 22066911549366245762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3321664649) 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, 32154 + ... + 87619.

It is an arithmetic number, because the mean of its divisors is an integer number (830453029).

Almost surely, 2^3321664609 is an apocalyptic number.

It is an amenable number.

3321664609 is a deficient number, since it is larger than the sum of its proper divisors (147507).

3321664609 is a wasteful number, since it uses less digits than its factorization.

3321664609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147506.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 3321664609 is about 57633.8842088576. The cubic root of 3321664609 is about 1492.0564683865.

The spelling of 3321664609 in words is "three billion, three hundred twenty-one million, six hundred sixty-four thousand, six hundred nine".