135633636 has 48 divisors (see below), whose sum is σ = 354014080. Its totient is φ = 44906400.

The previous prime is 135633629. The next prime is 135633637. The reversal of 135633636 is 636336531.

135633636 is a `hidden beast` number, since 13 + 5 + 6 + 3 + 3 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 135633636.

It is not an unprimeable number, because it can be changed into a prime (135633637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12150 + ... + 20466.

Almost surely, 2^135633636 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 135633636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177007040).

135633636 is an abundant number, since it is smaller than the sum of its proper divisors (218380444).

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

135633636 is a wasteful number, since it uses less digits than its factorization.

135633636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481 (or 8473 counting only the distinct ones).

The product of its digits is 87480, while the sum is 36.

The square root of 135633636 is about 11646.1854699296. The cubic root of 135633636 is about 513.7941258918.

The spelling of 135633636 in words is "one hundred thirty-five million, six hundred thirty-three thousand, six hundred thirty-six".