565000 has 40 divisors (see below), whose sum is σ = 1335510. Its totient is φ = 224000.

The previous prime is 564997. The next prime is 565013. The reversal of 565000 is 565.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 26244 + 538756 = 162^2 + 734^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4944 + ... + 5056.

2⁵⁶⁵⁰⁰⁰ is an apocalyptic number.

565000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667755).

565000 is an abundant number, since it is smaller than the sum of its proper divisors (770510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565000 is a wasteful number, since it uses less digits than its factorization.

565000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 565000 is about 751.6648189186. The cubic root of 565000 is about 82.6702940945.

Adding to 565000 its reverse (565), we get a palindrome (565565).

565000 divided by its reverse (565) gives a cube (1000 = 10³).

The spelling of 565000 in words is "five hundred sixty-five thousand".