63536856 has 128 divisors (see below), whose sum is σ = 176947200. Its totient is φ = 18944640.

The previous prime is 63536821. The next prime is 63536857. The reversal of 63536856 is 65863536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63536857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 804225 + ... + 804303.

It is an arithmetic number, because the mean of its divisors is an integer number (1382400).

Almost surely, 2^63536856 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 63536856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88473600).

63536856 is an abundant number, since it is smaller than the sum of its proper divisors (113410344).

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

63536856 is a wasteful number, since it uses less digits than its factorization.

63536856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 185 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 63536856 is about 7971.0009409107. Note that the first 3 decimals coincide. The cubic root of 63536856 is about 399.0327797643.

The spelling of 63536856 in words is "sixty-three million, five hundred thirty-six thousand, eight hundred fifty-six".