5665646 has 16 divisors (see below), whose sum is σ = 9744000. Its totient is φ = 2420280.

The previous prime is 5665631. The next prime is 5665661. The reversal of 5665646 is 6465665.

It is an interprime number because it is at equal distance from previous prime (5665631) and next prime (5665661).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6581 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (609000).

Almost surely, 2^5665646 is an apocalyptic number.

5665646 is a deficient number, since it is larger than the sum of its proper divisors (4078354).

5665646 is a wasteful number, since it uses less digits than its factorization.

5665646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its digits is 129600, while the sum is 38.

The square root of 5665646 is about 2380.2617503123. The cubic root of 5665646 is about 178.2720034446.

The spelling of 5665646 in words is "five million, six hundred sixty-five thousand, six hundred forty-six".