3665836 has 12 divisors (see below), whose sum is σ = 6564712. Its totient is φ = 1790208.

The previous prime is 3665819. The next prime is 3665839. The reversal of 3665836 is 6385663.

It is a junction number, because it is equal to n+sod(n) for n = 3665795 and 3665804.

It is not an unprimeable number, because it can be changed into a prime (3665839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10485 + ... + 10828.

Almost surely, 2^3665836 is an apocalyptic number.

It is an amenable number.

3665836 is a deficient number, since it is larger than the sum of its proper divisors (2898876).

3665836 is a wasteful number, since it uses less digits than its factorization.

3665836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21360 (or 21358 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 3665836 is about 1914.6373024675. The cubic root of 3665836 is about 154.1905214933.

The spelling of 3665836 in words is "three million, six hundred sixty-five thousand, eight hundred thirty-six".