5656665 has 32 divisors (see below), whose sum is σ = 10955520. Its totient is φ = 2433024.

The previous prime is 5656649. The next prime is 5656691. The reversal of 5656665 is 5666565.

It is a happy number.

It is not a de Polignac number, because 5656665 - 2⁴ = 5656649 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201 + ... + 3369.

It is an arithmetic number, because the mean of its divisors is an integer number (342360).

Almost surely, 2^5656665 is an apocalyptic number.

It is an amenable number.

5656665 is a deficient number, since it is larger than the sum of its proper divisors (5298855).

5656665 is a wasteful number, since it uses less digits than its factorization.

5656665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201.

The product of its digits is 162000, while the sum is 39.

The square root of 5656665 is about 2378.3744448678. The cubic root of 5656665 is about 178.1777566107.

The spelling of 5656665 in words is "five million, six hundred fifty-six thousand, six hundred sixty-five".