565166 has 24 divisors (see below), whose sum is σ = 1012320. Its totient is φ = 235872.

The previous prime is 565163. The next prime is 565171. The reversal of 565166 is 661565.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7115 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (42180).

2⁵⁶⁵¹⁶⁶ is an apocalyptic number.

565166 is a deficient number, since it is larger than the sum of its proper divisors (447154).

565166 is a wasteful number, since it uses less digits than its factorization.

565166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 161 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 565166 is about 751.7752323667. The cubic root of 565166 is about 82.6783896255.

The spelling of 565166 in words is "five hundred sixty-five thousand, one hundred sixty-six".