5664663 has 12 divisors (see below), whose sum is σ = 8403928. Its totient is φ = 3674160.

The previous prime is 5664653. The next prime is 5664671. The reversal of 5664663 is 3664665.

5664663 is a `hidden beast` number, since 5 + 6 + 646 + 6 + 3 = 666.

It is not a de Polignac number, because 5664663 - 2⁹ = 5664151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8173 + ... + 8838.

Almost surely, 2^5664663 is an apocalyptic number.

5664663 is a deficient number, since it is larger than the sum of its proper divisors (2739265).

5664663 is a wasteful number, since it uses less digits than its factorization.

5664663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17054 (or 17051 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 5664663 is about 2380.0552514595. The cubic root of 5664663 is about 178.2616926748.

The spelling of 5664663 in words is "five million, six hundred sixty-four thousand, six hundred sixty-three".