636368 has 20 divisors (see below), whose sum is σ = 1273728. Its totient is φ = 307680.

The previous prime is 636359. The next prime is 636403. The reversal of 636368 is 863636.

It is a happy number.

636368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

636368 is an admirable number.

It is a congruent number.

It is an unprimeable number.

636368 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 3 ways as a sum of consecutive naturals, for example, 146 + ... + 1137.

2⁶³⁶³⁶⁸ is an apocalyptic number.

It is an amenable number.

636368 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

636368 is a wasteful number, since it uses less digits than its factorization.

636368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1316 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 636368 is about 797.7267702666. The cubic root of 636368 is about 86.0140593564.

The spelling of 636368 in words is "six hundred thirty-six thousand, three hundred sixty-eight".