63885889 has 2 divisors, whose sum is σ = 63885890. Its totient is φ = 63885888.

The previous prime is 63885821. The next prime is 63885893. The reversal of 63885889 is 98858836.

63885889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55950400 + 7935489 = 7480^2 + 2817^2 .

It is a cyclic number.

It is not a de Polignac number, because 63885889 - 2¹⁵ = 63853121 is a prime.

It is not a weakly prime, because it can be changed into another prime (63885089) 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 as a sum of consecutive naturals, namely, 31942944 + 31942945.

It is an arithmetic number, because the mean of its divisors is an integer number (31942945).

Almost surely, 2^63885889 is an apocalyptic number.

It is an amenable number.

63885889 is a deficient number, since it is larger than the sum of its proper divisors (1).

63885889 is an equidigital number, since it uses as much as digits as its factorization.

63885889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 55.

The square root of 63885889 is about 7992.8648806295. The cubic root of 63885889 is about 399.7621273195.

The spelling of 63885889 in words is "sixty-three million, eight hundred eighty-five thousand, eight hundred eighty-nine".