565564423 has 4 divisors (see below), whose sum is σ = 578717128. Its totient is φ = 552411720.

The previous prime is 565564399. The next prime is 565564429. The reversal of 565564423 is 324465565.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-565564423 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 (565564429) 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, 6576288 + ... + 6576373.

It is an arithmetic number, because the mean of its divisors is an integer number (144679282).

Almost surely, 2^565564423 is an apocalyptic number.

565564423 is a deficient number, since it is larger than the sum of its proper divisors (13152705).

565564423 is a wasteful number, since it uses less digits than its factorization.

565564423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13152704.

The product of its digits is 432000, while the sum is 40.

The square root of 565564423 is about 23781.5984113768. The cubic root of 565564423 is about 826.9781355540.

The spelling of 565564423 in words is "five hundred sixty-five million, five hundred sixty-four thousand, four hundred twenty-three".