5636 has 6 divisors (see below), whose sum is σ = 9870. Its totient is φ = 2816.

The previous prime is 5623. The next prime is 5639. The reversal of 5636 is 6365.

It can be written as a sum of positive squares in only one way, i.e., 3136 + 2500 = 56^2 + 50^2 .

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (5639) by changing a digit.

5636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701 + ... + 708.

It is an arithmetic number, because the mean of its divisors is an integer number (1645).

2⁵⁶³⁶ is an apocalyptic number.

It is an amenable number.

5636 is a deficient number, since it is larger than the sum of its proper divisors (4234).

5636 is a wasteful number, since it uses less digits than its factorization.

5636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 1411 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 5636 is about 75.0732975165. The cubic root of 5636 is about 17.7960518113.

Subtracting 5636 from its reverse (6365), we obtain a 6-th power (729 = 3⁶).

It can be divided in two parts, 56 and 36, that multiplied together give a triangular number (2016 = T₆₃).

The spelling of 5636 in words is "five thousand, six hundred thirty-six".