636448848 has 320 divisors, whose sum is σ = 2095104000. Its totient is φ = 165957120.

The previous prime is 636448837. The next prime is 636448853. The reversal of 636448848 is 848844636.

636448848 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×636448848² = 810134272241054208, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 636448848.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14801115 + ... + 14801157.

It is an arithmetic number, because the mean of its divisors is an integer number (6547200).

Almost surely, 2^636448848 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 636448848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1047552000).

636448848 is an abundant number, since it is smaller than the sum of its proper divisors (1458655152).

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

636448848 is a wasteful number, since it uses less digits than its factorization.

636448848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 115 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 51.

The square root of 636448848 is about 25227.9378467603. The cubic root of 636448848 is about 860.1770178247.

The spelling of 636448848 in words is "six hundred thirty-six million, four hundred forty-eight thousand, eight hundred forty-eight".