63538888 has 72 divisors (see below), whose sum is σ = 146589750. Its totient is φ = 25740288.

The previous prime is 63538873. The next prime is 63538897. The reversal of 63538888 is 88883536.

It can be written as a sum of positive squares in only one way, i.e., 51581124 + 11957764 = 7182^2 + 3458^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 141288 + ... + 141736.

Almost surely, 2^63538888 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 63538888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73294875).

63538888 is an abundant number, since it is smaller than the sum of its proper divisors (83050862).

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

63538888 is a wasteful number, since it uses less digits than its factorization.

63538888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 477 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 63538888 is about 7971.1284019265. The cubic root of 63538888 is about 399.0370335996.

The spelling of 63538888 in words is "sixty-three million, five hundred thirty-eight thousand, eight hundred eighty-eight".