63543568 has 40 divisors (see below), whose sum is σ = 135125280. Its totient is φ = 28707840.

The previous prime is 63543511. The next prime is 63543587. The reversal of 63543568 is 86534536.

It is a self number, because there is not a number n which added to its sum of digits gives 63543568.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30496 + ... + 32512.

It is an arithmetic number, because the mean of its divisors is an integer number (3378132).

Almost surely, 2^63543568 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 63543568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67562640).

63543568 is an abundant number, since it is smaller than the sum of its proper divisors (71581712).

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

63543568 is a wasteful number, since it uses less digits than its factorization.

63543568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215 (or 2209 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 63543568 is about 7971.4219559624. The cubic root of 63543568 is about 399.0468304738.

The spelling of 63543568 in words is "sixty-three million, five hundred forty-three thousand, five hundred sixty-eight".