3221613 has 20 divisors (see below), whose sum is σ = 4971648. Its totient is φ = 2076840.

The previous prime is 3221599. The next prime is 3221629. The reversal of 3221613 is 3161223.

3221613 is a `hidden beast` number, since 32 + 21 + 613 = 666.

It is not a de Polignac number, because 3221613 - 2⁶ = 3221549 is a prime.

3221613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221513) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1870 + ... + 3152.

Almost surely, 2^3221613 is an apocalyptic number.

It is an amenable number.

3221613 is a deficient number, since it is larger than the sum of its proper divisors (1750035).

3221613 is a wasteful number, since it uses less digits than its factorization.

3221613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1317 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 3221613 is about 1794.8852330999. The cubic root of 3221613 is about 147.6922782076.

Adding to 3221613 its reverse (3161223), we get a palindrome (6382836).

The spelling of 3221613 in words is "three million, two hundred twenty-one thousand, six hundred thirteen".