3621213 has 16 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 2378880.

The previous prime is 3621199. The next prime is 3621217. The reversal of 3621213 is 3121263.

It is not a de Polignac number, because 3621213 - 2⁵ = 3621181 is a prime.

It is a super-2 number, since 2×3621213² = 26226367182738, which contains 22 as substring.

3621213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

Almost surely, 2^3621213 is an apocalyptic number.

It is an amenable number.

3621213 is a deficient number, since it is larger than the sum of its proper divisors (1821987).

3621213 is a wasteful number, since it uses less digits than its factorization.

3621213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1963 counting only the distinct ones).

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

The square root of 3621213 is about 1902.9485016679. The cubic root of 3621213 is about 153.5623290186.

Adding to 3621213 its reverse (3121263), we get a palindrome (6742476).

The spelling of 3621213 in words is "three million, six hundred twenty-one thousand, two hundred thirteen".