3656331 has 18 divisors (see below), whose sum is σ = 6144372. Its totient is φ = 2089080.

The previous prime is 3656329. The next prime is 3656353. The reversal of 3656331 is 1336563.

3656331 is a `hidden beast` number, since 3 + 656 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 3656331 - 2¹ = 3656329 is a prime.

It is a super-2 number, since 2×3656331² = 26737512763122, which contains 22 as substring.

3656331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3656295 and 3656304.

It is not an unprimeable number, because it can be changed into a prime (3656321) 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 17 ways as a sum of consecutive naturals, for example, 3705 + ... + 4586.

It is an arithmetic number, because the mean of its divisors is an integer number (341354).

Almost surely, 2^3656331 is an apocalyptic number.

3656331 is a deficient number, since it is larger than the sum of its proper divisors (2488041).

3656331 is a wasteful number, since it uses less digits than its factorization.

3656331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8311 (or 8301 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

The square root of 3656331 is about 1912.1534980226. The cubic root of 3656331 is about 154.0571413297.

The spelling of 3656331 in words is "three million, six hundred fifty-six thousand, three hundred thirty-one".