5663644 has 24 divisors (see below), whose sum is σ = 11500160. Its totient is φ = 2390256.

The previous prime is 5663611. The next prime is 5663657. The reversal of 5663644 is 4463665.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367 + ... + 3385.

Almost surely, 2^5663644 is an apocalyptic number.

It is an amenable number.

5663644 is an abundant number, since it is smaller than the sum of its proper divisors (5836516).

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

5663644 is a wasteful number, since it uses less digits than its factorization.

5663644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097 (or 3095 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 5663644 is about 2379.8411711709. The cubic root of 5663644 is about 178.2510030387.

The spelling of 5663644 in words is "five million, six hundred sixty-three thousand, six hundred forty-four".