5642564665 has 16 divisors (see below), whose sum is σ = 6991902720. Its totient is φ = 4366935360.

The previous prime is 5642564657. The next prime is 5642564693. The reversal of 5642564665 is 5664652465.

It is not a de Polignac number, because 5642564665 - 2³ = 5642564657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708576 + ... + 716494.

It is an arithmetic number, because the mean of its divisors is an integer number (436993920).

Almost surely, 2^5642564665 is an apocalyptic number.

It is an amenable number.

5642564665 is a deficient number, since it is larger than the sum of its proper divisors (1349338055).

5642564665 is a wasteful number, since it uses less digits than its factorization.

5642564665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552.

The product of its digits is 5184000, while the sum is 49.

The square root of 5642564665 is about 75117.0064965318. The cubic root of 5642564665 is about 1780.2958588510.

The spelling of 5642564665 in words is "five billion, six hundred forty-two million, five hundred sixty-four thousand, six hundred sixty-five".