566538 has 48 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 154560.

The previous prime is 566537. The next prime is 566539. The reversal of 566538 is 835665.

It is an interprime number because it is at equal distance from previous prime (566537) and next prime (566539).

Its product of digits (21600) is a multiple of the sum of its prime divisors (100).

It is a junction number, because it is equal to n+sod(n) for n = 566499 and 566508.

It is not an unprimeable number, because it can be changed into a prime (566537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12031 + ... + 12077.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

2⁵⁶⁶⁵³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689472).

566538 is an abundant number, since it is smaller than the sum of its proper divisors (812406).

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

566538 is a wasteful number, since it uses less digits than its factorization.

566538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 100 counting only the distinct ones).

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

The square root of 566538 is about 752.6871860209. The cubic root of 566538 is about 82.7452390600.

The spelling of 566538 in words is "five hundred sixty-six thousand, five hundred thirty-eight".