636896 has 24 divisors (see below), whose sum is σ = 1351224. Its totient is φ = 293760.

The previous prime is 636877. The next prime is 636917. The reversal of 636896 is 698636.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 350 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (56301).

2⁶³⁶⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

636896 is an abundant number, since it is smaller than the sum of its proper divisors (714328).

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

636896 is a wasteful number, since it uses less digits than its factorization.

636896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1546 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 636896 is about 798.0576420284. The cubic root of 636896 is about 86.0378416483.

The spelling of 636896 in words is "six hundred thirty-six thousand, eight hundred ninety-six".