565536 has 48 divisors (see below), whose sum is σ = 1530144. Its totient is φ = 182784.

The previous prime is 565519. The next prime is 565549. The reversal of 565536 is 635565.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

565536 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4060 + ... + 4196.

It is an arithmetic number, because the mean of its divisors is an integer number (31878).

2⁵⁶⁵⁵³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765072).

565536 is an abundant number, since it is smaller than the sum of its proper divisors (964608).

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

565536 is a wasteful number, since it uses less digits than its factorization.

565536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 185 counting only the distinct ones).

The product of its digits is 13500, while the sum is 30.

The square root of 565536 is about 752.0212762948. The cubic root of 565536 is about 82.6964281787.

The spelling of 565536 in words is "five hundred sixty-five thousand, five hundred thirty-six".