563565 has 8 divisors (see below), whose sum is σ = 901728. Its totient is φ = 300560.

The previous prime is 563561. The next prime is 563587. The reversal of 563565 is 565365.

563565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 563565 - 2² = 563561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563561) 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, 18771 + ... + 18800.

It is an arithmetic number, because the mean of its divisors is an integer number (112716).

2⁵⁶³⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

563565 is a deficient number, since it is larger than the sum of its proper divisors (338163).

563565 is a wasteful number, since it uses less digits than its factorization.

563565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37579.

The product of its digits is 13500, while the sum is 30.

The square root of 563565 is about 750.7096642511. The cubic root of 563565 is about 82.6002454522.

It can be divided in two parts, 563 and 565, that added together give a triangular number (1128 = T₄₇).

The spelling of 563565 in words is "five hundred sixty-three thousand, five hundred sixty-five".