636330 has 16 divisors (see below), whose sum is σ = 1527264. Its totient is φ = 169680.

The previous prime is 636319. The next prime is 636331. The reversal of 636330 is 33636.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 636297 and 636306.

It is not an unprimeable number, because it can be changed into a prime (636331) 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, 10576 + ... + 10635.

It is an arithmetic number, because the mean of its divisors is an integer number (95454).

2⁶³⁶³³⁰ is an apocalyptic number.

636330 is an abundant number, since it is smaller than the sum of its proper divisors (890934).

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

636330 is a wasteful number, since it uses less digits than its factorization.

636330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21221.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 636330 is about 797.7029522322. The cubic root of 636330 is about 86.0123472447.

Adding to 636330 its reverse (33636), we get a palindrome (669966).

The spelling of 636330 in words is "six hundred thirty-six thousand, three hundred thirty".