3318861 has 16 divisors (see below), whose sum is σ = 5446784. Its totient is φ = 1750464.

The previous prime is 3318857. The next prime is 3318911. The reversal of 3318861 is 1688133.

It is not a de Polignac number, because 3318861 - 2² = 3318857 is a prime.

It is a super-2 number, since 2×3318861² = 22029676674642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318841) 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, 5806 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (340424).

Almost surely, 2^3318861 is an apocalyptic number.

It is an amenable number.

3318861 is a deficient number, since it is larger than the sum of its proper divisors (2127923).

3318861 is a wasteful number, since it uses less digits than its factorization.

3318861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180.

The product of its digits is 3456, while the sum is 30.

The square root of 3318861 is about 1821.7741352868. The cubic root of 3318861 is about 149.1636566430.

The spelling of 3318861 in words is "three million, three hundred eighteen thousand, eight hundred sixty-one".