565464565 has 4 divisors (see below), whose sum is σ = 678557484. Its totient is φ = 452371648.

The previous prime is 565464563. The next prime is 565464587.

565464565 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258759396 + 306705169 = 16086^2 + 17513^2 .

It is a cyclic number.

It is not a de Polignac number, because 565464565 - 2¹ = 565464563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565464563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56546452 + ... + 56546461.

It is an arithmetic number, because the mean of its divisors is an integer number (169639371).

Almost surely, 2^565464565 is an apocalyptic number.

It is an amenable number.

565464565 is a deficient number, since it is larger than the sum of its proper divisors (113092919).

565464565 is a wasteful number, since it uses less digits than its factorization.

565464565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113092918.

The product of its digits is 2160000, while the sum is 46.

The square root of 565464565 is about 23779.4988382850. The cubic root of 565464565 is about 826.9294613211.

It can be divided in two parts, 565 and 464565, that added together give a triangular number (465130 = T₉₆₄).

The spelling of 565464565 in words is "five hundred sixty-five million, four hundred sixty-four thousand, five hundred sixty-five".