168636 has 48 divisors (see below), whose sum is σ = 451584. Its totient is φ = 48576.

The previous prime is 168631. The next prime is 168643. The reversal of 168636 is 636861.

168636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

168636 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168631) by changing a digit.

168636 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 in 15 ways as a sum of consecutive naturals, for example, 3565 + ... + 3611.

It is an arithmetic number, because the mean of its divisors is an integer number (9408).

2¹⁶⁸⁶³⁶ 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 168636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225792).

168636 is an abundant number, since it is smaller than the sum of its proper divisors (282948).

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

168636 is a wasteful number, since it uses less digits than its factorization.

168636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 88 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 168636 is about 410.6531383053. The cubic root of 168636 is about 55.2480258367.

The spelling of 168636 in words is "one hundred sixty-eight thousand, six hundred thirty-six".