63581360 has 40 divisors (see below), whose sum is σ = 156525696. Its totient is φ = 23936000.

The previous prime is 63581359. The next prime is 63581363. The reversal of 63581360 is 6318536.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (63581363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22016 + ... + 24735.

Almost surely, 2^63581360 is an apocalyptic number.

It is an amenable number.

63581360 is an abundant number, since it is smaller than the sum of its proper divisors (92944336).

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

63581360 is a wasteful number, since it uses less digits than its factorization.

63581360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46781 (or 46775 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 63581360 is about 7973.7920715303. The cubic root of 63581360 is about 399.1259247055.

Adding to 63581360 its reverse (6318536), we get a palindrome (69899896).

The spelling of 63581360 in words is "sixty-three million, five hundred eighty-one thousand, three hundred sixty".