63581163 has 16 divisors (see below), whose sum is σ = 89644800. Its totient is φ = 39972960.

The previous prime is 63581149. The next prime is 63581183. The reversal of 63581163 is 36118536.

It is not a de Polignac number, because 63581163 - 2⁶ = 63581099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63581113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10618 + ... + 15488.

It is an arithmetic number, because the mean of its divisors is an integer number (5602800).

Almost surely, 2^63581163 is an apocalyptic number.

63581163 is a deficient number, since it is larger than the sum of its proper divisors (26063637).

63581163 is a wasteful number, since it uses less digits than its factorization.

63581163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122.

The product of its digits is 12960, while the sum is 33.

The square root of 63581163 is about 7973.7797185526. The cubic root of 63581163 is about 399.1255124889.

Adding to 63581163 its reverse (36118536), we get a palindrome (99699699).

The spelling of 63581163 in words is "sixty-three million, five hundred eighty-one thousand, one hundred sixty-three".