632648256 has 56 divisors (see below), whose sum is σ = 1686726624. Its totient is φ = 209264640.

The previous prime is 632648249. The next prime is 632648257. The reversal of 632648256 is 652846236.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (632648257) by changing a digit.

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, 12576 + ... + 37728.

Almost surely, 2^632648256 is an apocalyptic number.

It is a pronic number, being equal to 25152×25153.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 632648256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843363312).

632648256 is an abundant number, since it is smaller than the sum of its proper divisors (1054078368).

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

632648256 is a wasteful number, since it uses less digits than its factorization.

632648256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25299 (or 25289 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 632648256 is about 25152.4999950303. The cubic root of 632648256 is about 858.4613989661.

The spelling of 632648256 in words is "six hundred thirty-two million, six hundred forty-eight thousand, two hundred fifty-six".