636345 has 24 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 333216.

The previous prime is 636343. The next prime is 636353. The reversal of 636345 is 543636.

636345 is nontrivially palindromic in base 16.

636345 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 636345 - 2¹ = 636343 is a prime.

It is an alternating number because its digits alternate between even and odd.

636345 is strictly pandigital in base 7.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (636343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3466 + ... + 3644.

It is an arithmetic number, because the mean of its divisors is an integer number (46800).

2⁶³⁶³⁴⁵ is an apocalyptic number.

It is an amenable number.

636345 is a deficient number, since it is larger than the sum of its proper divisors (486855).

636345 is a wasteful number, since it uses less digits than its factorization.

636345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 266 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 636345 is about 797.7123541729. The cubic root of 636345 is about 86.0130230864.

The spelling of 636345 in words is "six hundred thirty-six thousand, three hundred forty-five".