3638836 has 12 divisors (see below), whose sum is σ = 6381760. Its totient is φ = 1815480.

The previous prime is 3638827. The next prime is 3638851. The reversal of 3638836 is 6388363.

3638836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3638836² = 26482254869792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3638795 and 3638804.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2341 + ... + 3571.

Almost surely, 2^3638836 is an apocalyptic number.

It is an amenable number.

3638836 is a deficient number, since it is larger than the sum of its proper divisors (2742924).

3638836 is a wasteful number, since it uses less digits than its factorization.

3638836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974 (or 1972 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 3638836 is about 1907.5733275552. The cubic root of 3638836 is about 153.8110348813.

The spelling of 3638836 in words is "three million, six hundred thirty-eight thousand, eight hundred thirty-six".