135636 has 24 divisors (see below), whose sum is σ = 322560. Its totient is φ = 44352.

The previous prime is 135623. The next prime is 135637. The reversal of 135636 is 636531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135637) 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 7 ways as a sum of consecutive naturals, for example, 1005 + ... + 1131.

It is an arithmetic number, because the mean of its divisors is an integer number (13440).

2¹³⁵⁶³⁶ is an apocalyptic number.

It is an amenable number.

135636 is an abundant number, since it is smaller than the sum of its proper divisors (186924).

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

135636 is a wasteful number, since it uses less digits than its factorization.

135636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 221 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 135636 is about 368.2879308367. The cubic root of 135636 is about 51.3797110899.

The spelling of 135636 in words is "one hundred thirty-five thousand, six hundred thirty-six".