3321545665 has 16 divisors (see below), whose sum is σ = 4014122112. Its totient is φ = 2638427904.

The previous prime is 3321545657. The next prime is 3321545693. The reversal of 3321545665 is 5665451233.

It is a cyclic number.

It is not a de Polignac number, because 3321545665 - 2³ = 3321545657 is a prime.

It is a super-2 number, since 2×3321545665² = 22065331209360584450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1081462 + ... + 1084528.

It is an arithmetic number, because the mean of its divisors is an integer number (250882632).

Almost surely, 2^3321545665 is an apocalyptic number.

It is an amenable number.

3321545665 is a deficient number, since it is larger than the sum of its proper divisors (692576447).

3321545665 is a wasteful number, since it uses less digits than its factorization.

3321545665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536.

The product of its digits is 324000, while the sum is 40.

The square root of 3321545665 is about 57632.8523066489. The cubic root of 3321545665 is about 1492.0386587134.

Adding to 3321545665 its reverse (5665451233), we get a palindrome (8986996898).

The spelling of 3321545665 in words is "three billion, three hundred twenty-one million, five hundred forty-five thousand, six hundred sixty-five".