63489986 has 16 divisors (see below), whose sum is σ = 111062400. Its totient is φ = 27209700.

The previous prime is 63489949. The next prime is 63489989. The reversal of 63489986 is 68998436.

63489986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63489989) 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 7 ways as a sum of consecutive naturals, for example, 45590 + ... + 46961.

It is an arithmetic number, because the mean of its divisors is an integer number (6941400).

Almost surely, 2^63489986 is an apocalyptic number.

63489986 is a deficient number, since it is larger than the sum of its proper divisors (47572414).

63489986 is an equidigital number, since it uses as much as digits as its factorization.

63489986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92574 (or 92560 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 63489986 is about 7968.0603662372. The cubic root of 63489986 is about 398.9346358506.

The spelling of 63489986 in words is "sixty-three million, four hundred eighty-nine thousand, nine hundred eighty-six".