5655664 has 20 divisors (see below), whose sum is σ = 12523504. Its totient is φ = 2423808.

The previous prime is 5655659. The next prime is 5655721. The reversal of 5655664 is 4665565.

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, 25137 + ... + 25360.

Almost surely, 2^5655664 is an apocalyptic number.

It is an amenable number.

5655664 is an abundant number, since it is smaller than the sum of its proper divisors (6867840).

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

5655664 is a wasteful number, since it uses less digits than its factorization.

5655664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50512 (or 50506 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 5655664 is about 2378.1639977092. The cubic root of 5655664 is about 178.1672459149.

Subtracting from 5655664 its reverse (4665565), we obtain a palindrome (990099).

The spelling of 5655664 in words is "five million, six hundred fifty-five thousand, six hundred sixty-four".