63866444 has 12 divisors (see below), whose sum is σ = 113181600. Its totient is φ = 31528848.

The previous prime is 63866443. The next prime is 63866447. The reversal of 63866444 is 44466836.

63866444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63866443) 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 3 ways as a sum of consecutive naturals, for example, 100739 + ... + 101370.

It is an arithmetic number, because the mean of its divisors is an integer number (9431800).

Almost surely, 2^63866444 is an apocalyptic number.

It is an amenable number.

63866444 is a deficient number, since it is larger than the sum of its proper divisors (49315156).

63866444 is a wasteful number, since it uses less digits than its factorization.

63866444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202192 (or 202190 counting only the distinct ones).

The product of its digits is 331776, while the sum is 41.

The square root of 63866444 is about 7991.6483906638. The cubic root of 63866444 is about 399.7215645626.

The spelling of 63866444 in words is "sixty-three million, eight hundred sixty-six thousand, four hundred forty-four".