565385 has 8 divisors (see below), whose sum is σ = 688200. Its totient is φ = 445824.

The previous prime is 565381. The next prime is 565387. The reversal of 565385 is 583565.

565385 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 41209 + 524176 = 203^2 + 724^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 565385 - 2² = 565381 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 565385.

It is not an unprimeable number, because it can be changed into a prime (565381) 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, 410 + ... + 1139.

It is an arithmetic number, because the mean of its divisors is an integer number (86025).

2⁵⁶⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

565385 is a deficient number, since it is larger than the sum of its proper divisors (122815).

565385 is a wasteful number, since it uses less digits than its factorization.

565385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627.

The product of its digits is 18000, while the sum is 32.

The square root of 565385 is about 751.9208734967. The cubic root of 565385 is about 82.6890674494.

Adding to 565385 its product of digits (18000), we get a palindrome (583385).

The spelling of 565385 in words is "five hundred sixty-five thousand, three hundred eighty-five".