118636 has 24 divisors (see below), whose sum is σ = 250880. Its totient is φ = 47952.

The previous prime is 118633. The next prime is 118661. The reversal of 118636 is 636811.

It is a self number, because there is not a number n which added to its sum of digits gives 118636.

It is not an unprimeable number, because it can be changed into a prime (118633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421 + ... + 643.

2¹¹⁸⁶³⁶ 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 118636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125440).

118636 is an abundant number, since it is smaller than the sum of its proper divisors (132244).

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

118636 is a wasteful number, since it uses less digits than its factorization.

118636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 251 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 118636 is about 344.4357705001. The cubic root of 118636 is about 49.1366448275.

The spelling of 118636 in words is "one hundred eighteen thousand, six hundred thirty-six".