636336 has 50 divisors (see below), whose sum is σ = 1845492. Its totient is φ = 211680.

The previous prime is 636331. The next prime is 636343. The reversal of 636336 is 633636.

636336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (636331) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1051 + ... + 1541.

2⁶³⁶³³⁶ 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 636336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922746).

636336 is an abundant number, since it is smaller than the sum of its proper divisors (1209156).

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

636336 is a wasteful number, since it uses less digits than its factorization.

636336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 496 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

The square root of 636336 is about 797.7067130218. The cubic root of 636336 is about 86.0126175826.

The spelling of 636336 in words is "six hundred thirty-six thousand, three hundred thirty-six".