3301621 has 16 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 2903040.

The previous prime is 3301603. The next prime is 3301631. The reversal of 3301621 is 1261033.

3301621 = T₃₀₈ + T₃₀₉ + ... + T₃₆₅.

3301621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 7396 + 3294225 = 86^2 + 1815^2 .

It is a 5-Lehmer number, since φ(3301621) divides (3301621-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 3301621 - 2¹³ = 3293429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3301595 and 3301604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3301601) 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 in 15 ways as a sum of consecutive naturals, for example, 18151 + ... + 18331.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

Almost surely, 2^3301621 is an apocalyptic number.

It is an amenable number.

3301621 is a deficient number, since it is larger than the sum of its proper divisors (433019).

3301621 is a wasteful number, since it uses less digits than its factorization.

3301621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3301621 is about 1817.0363232473. The cubic root of 3301621 is about 148.9049286161.

Adding to 3301621 its reverse (1261033), we get a palindrome (4562654).

The spelling of 3301621 in words is "three million, three hundred one thousand, six hundred twenty-one".