636707830968 has 192 divisors, whose sum is σ = 2013757200000. Its totient is φ = 179688602880.

The previous prime is 636707830943. The next prime is 636707830999. The reversal of 636707830968 is 869038707636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 529258 + ... + 1246406.

It is an arithmetic number, because the mean of its divisors is an integer number (10488318750).

Almost surely, 2^636707830968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636707830968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006878600000).

636707830968 is an abundant number, since it is smaller than the sum of its proper divisors (1377049369032).

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

636707830968 is a wasteful number, since it uses less digits than its factorization.

636707830968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717250 (or 717243 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 636707830968 in words is "six hundred thirty-six billion, seven hundred seven million, eight hundred thirty thousand, nine hundred sixty-eight".