636396 has 24 divisors (see below), whose sum is σ = 1498224. Its totient is φ = 210240.

The previous prime is 636359. The next prime is 636403. The reversal of 636396 is 693636.

It is a plaindrome in base 14.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 636396.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (62426).

2⁶³⁶³⁹⁶ is an apocalyptic number.

It is an amenable number.

636396 is an abundant number, since it is smaller than the sum of its proper divisors (861828).

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

636396 is a wasteful number, since it uses less digits than its factorization.

636396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 479 counting only the distinct ones).

The product of its digits is 17496, while the sum is 33.

The square root of 636396 is about 797.7443199422. The cubic root of 636396 is about 86.0153208688.

The spelling of 636396 in words is "six hundred thirty-six thousand, three hundred ninety-six".