63986886 has 12 divisors (see below), whose sum is σ = 138638292. Its totient is φ = 21328956.

The previous prime is 63986869. The next prime is 63986887. The reversal of 63986886 is 68868936.

63986886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63986887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1777396 + ... + 1777431.

It is an arithmetic number, because the mean of its divisors is an integer number (11553191).

Almost surely, 2^63986886 is an apocalyptic number.

63986886 is an abundant number, since it is smaller than the sum of its proper divisors (74651406).

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

63986886 is a wasteful number, since it uses less digits than its factorization.

63986886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554835 (or 3554832 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 63986886 is about 7999.1803330091. The cubic root of 63986886 is about 399.9726773004.

The spelling of 63986886 in words is "sixty-three million, nine hundred eighty-six thousand, eight hundred eighty-six".