3638684 has 12 divisors (see below), whose sum is σ = 7277424. Its totient is φ = 1559424.

The previous prime is 3638653. The next prime is 3638699. The reversal of 3638684 is 4868363.

3638684 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

3638684 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

3638684 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 3 ways as a sum of consecutive naturals, for example, 64949 + ... + 65004.

It is an arithmetic number, because the mean of its divisors is an integer number (606452).

Almost surely, 2^3638684 is an apocalyptic number.

It is an amenable number.

3638684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3638684 is a wasteful number, since it uses less digits than its factorization.

3638684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129964 (or 129962 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 3638684 is about 1907.5334859446. The cubic root of 3638684 is about 153.8088932072.

The spelling of 3638684 in words is "three million, six hundred thirty-eight thousand, six hundred eighty-four".