636000648 has 32 divisors (see below), whose sum is σ = 1616954400. Its totient is φ = 208406528.

The previous prime is 636000613. The next prime is 636000691. The reversal of 636000648 is 846000636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223161 + ... + 225992.

It is an arithmetic number, because the mean of its divisors is an integer number (50529825).

Almost surely, 2^636000648 is an apocalyptic number.

It is an amenable number.

636000648 is an abundant number, since it is smaller than the sum of its proper divisors (980953752).

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

636000648 is a wasteful number, since it uses less digits than its factorization.

636000648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449221 (or 449217 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 636000648 is about 25219.0532732694. The cubic root of 636000648 is about 859.9750524582.

The spelling of 636000648 in words is "six hundred thirty-six million, six hundred forty-eight", and thus it is an aban number.