63631344 has 160 divisors (see below), whose sum is σ = 199987200. Its totient is φ = 17049600.

The previous prime is 63631339. The next prime is 63631349. The reversal of 63631344 is 44313636.

It is an interprime number because it is at equal distance from previous prime (63631339) and next prime (63631349).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63631349) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 426982 + ... + 427130.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^63631344 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 63631344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99993600).

63631344 is an abundant number, since it is smaller than the sum of its proper divisors (136355856).

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

63631344 is a wasteful number, since it uses less digits than its factorization.

63631344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 233 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

The square root of 63631344 is about 7976.9257236106. The cubic root of 63631344 is about 399.2304872413.

The spelling of 63631344 in words is "sixty-three million, six hundred thirty-one thousand, three hundred forty-four".