565006665 has 16 divisors (see below), whose sum is σ = 904459968. Its totient is φ = 301187136.

The previous prime is 565006649. The next prime is 565006697. The reversal of 565006665 is 566600565.

It is a happy number.

It is not a de Polignac number, because 565006665 - 2⁴ = 565006649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26182 + ... + 42608.

It is an arithmetic number, because the mean of its divisors is an integer number (56528748).

Almost surely, 2^565006665 is an apocalyptic number.

It is an amenable number.

565006665 is a deficient number, since it is larger than the sum of its proper divisors (339453303).

565006665 is a wasteful number, since it uses less digits than its factorization.

565006665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18728.

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

The square root of 565006665 is about 23769.8688469247. The cubic root of 565006665 is about 826.7061916550.

The spelling of 565006665 in words is "five hundred sixty-five million, six thousand, six hundred sixty-five".