565365563 has 8 divisors (see below), whose sum is σ = 646434528. Its totient is φ = 484372224.

The previous prime is 565365533. The next prime is 565365601. The reversal of 565365563 is 365563565.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 565365563 - 2²⁴ = 548588347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565365533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1856 + ... + 33677.

It is an arithmetic number, because the mean of its divisors is an integer number (80804316).

Almost surely, 2^565365563 is an apocalyptic number.

565365563 is a deficient number, since it is larger than the sum of its proper divisors (81068965).

565365563 is a wasteful number, since it uses less digits than its factorization.

565365563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37813.

The product of its digits is 1215000, while the sum is 44.

The square root of 565365563 is about 23777.4170800783. The cubic root of 565365563 is about 826.8811986748.

The spelling of 565365563 in words is "five hundred sixty-five million, three hundred sixty-five thousand, five hundred sixty-three".