3638964 has 24 divisors (see below), whose sum is σ = 9704128. Its totient is φ = 1039680.

The previous prime is 3638959. The next prime is 3638993. The reversal of 3638964 is 4698363.

3638964 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

3638964 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21577 + ... + 21744.

Almost surely, 2^3638964 is an apocalyptic number.

It is an amenable number.

3638964 is an abundant number, since it is smaller than the sum of its proper divisors (6065164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3638964 is a wasteful number, since it uses less digits than its factorization.

3638964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43335 (or 43333 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 3638964 is about 1907.6068777398. The cubic root of 3638964 is about 153.8128383501.

The spelling of 3638964 in words is "three million, six hundred thirty-eight thousand, nine hundred sixty-four".