538566 has 16 divisors (see below), whose sum is σ = 1231104. Its totient is φ = 153864.

The previous prime is 538561. The next prime is 538567. The reversal of 538566 is 665835.

538566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538561) 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, 6370 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (76944).

2⁵³⁸⁵⁶⁶ is an apocalyptic number.

538566 is an abundant number, since it is smaller than the sum of its proper divisors (692538).

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

538566 is a wasteful number, since it uses less digits than its factorization.

538566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12835.

The product of its digits is 21600, while the sum is 33.

The square root of 538566 is about 733.8705607939. The cubic root of 538566 is about 81.3603817290.

The spelling of 538566 in words is "five hundred thirty-eight thousand, five hundred sixty-six".