3638744 has 8 divisors (see below), whose sum is σ = 6822660. Its totient is φ = 1819368.

The previous prime is 3638699. The next prime is 3638753. The reversal of 3638744 is 4478363.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227414 + ... + 227429.

Almost surely, 2^3638744 is an apocalyptic number.

It is an amenable number.

3638744 is a deficient number, since it is larger than the sum of its proper divisors (3183916).

3638744 is a wasteful number, since it uses less digits than its factorization.

3638744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454849 (or 454845 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 3638744 is about 1907.5492129956. The cubic root of 3638744 is about 153.8097386120.

The spelling of 3638744 in words is "three million, six hundred thirty-eight thousand, seven hundred forty-four".