3319621 has 2 divisors, whose sum is σ = 3319622. Its totient is φ = 3319620.

The previous prime is 3319619. The next prime is 3319627. The reversal of 3319621 is 1269133.

3319621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2217121 + 1102500 = 1489^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 3319621 - 2¹ = 3319619 is a prime.

It is a super-2 number, since 2×3319621² = 22039767167282, which contains 22 as substring.

Together with 3319619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3319627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1659810 + 1659811.

It is an arithmetic number, because the mean of its divisors is an integer number (1659811).

Almost surely, 2^3319621 is an apocalyptic number.

It is an amenable number.

3319621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3319621 is an equidigital number, since it uses as much as digits as its factorization.

3319621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 3319621 is about 1821.9827112242. The cubic root of 3319621 is about 149.1750416460.

The spelling of 3319621 in words is "three million, three hundred nineteen thousand, six hundred twenty-one".