3381661 has 6 divisors (see below), whose sum is σ = 3503162. Its totient is φ = 3264240.

The previous prime is 3381647. The next prime is 3381673. The reversal of 3381661 is 1661833.

It can be written as a sum of positive squares in 3 ways, for example, as 72900 + 3308761 = 270^2 + 1819^2 .

It is not a de Polignac number, because 3381661 - 2⁹ = 3381149 is a prime.

It is a super-2 number, since 2×3381661² = 22871262237842, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3381641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1170 + ... + 2851.

Almost surely, 2^3381661 is an apocalyptic number.

It is an amenable number.

3381661 is a deficient number, since it is larger than the sum of its proper divisors (121501).

3381661 is an equidigital number, since it uses as much as digits as its factorization.

3381661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079 (or 4050 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 3381661 is about 1838.9293080486. The cubic root of 3381661 is about 150.0986166323.

The spelling of 3381661 in words is "three million, three hundred eighty-one thousand, six hundred sixty-one".