630808056 has 96 divisors (see below), whose sum is σ = 1836806400. Its totient is φ = 194944320.

The previous prime is 630808043. The next prime is 630808081. The reversal of 630808056 is 650808036.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 630808056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59391 + ... + 69201.

It is an arithmetic number, because the mean of its divisors is an integer number (19133400).

Almost surely, 2^630808056 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 630808056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918403200).

630808056 is an abundant number, since it is smaller than the sum of its proper divisors (1205998344).

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

630808056 is a wasteful number, since it uses less digits than its factorization.

630808056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9889 (or 9882 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 630808056 is about 25115.8924985755. The cubic root of 630808056 is about 857.6282478385.

The spelling of 630808056 in words is "six hundred thirty million, eight hundred eight thousand, fifty-six".