63889916 has 12 divisors (see below), whose sum is σ = 114407832. Its totient is φ = 31201968.

The previous prime is 63889901. The next prime is 63889919. The reversal of 63889916 is 61998836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63889919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185555 + ... + 185898.

It is an arithmetic number, because the mean of its divisors is an integer number (9533986).

Almost surely, 2^63889916 is an apocalyptic number.

It is an amenable number.

63889916 is a deficient number, since it is larger than the sum of its proper divisors (50517916).

63889916 is a wasteful number, since it uses less digits than its factorization.

63889916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371500 (or 371498 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 63889916 is about 7993.1167888378. The cubic root of 63889916 is about 399.7705267135.

The spelling of 63889916 in words is "sixty-three million, eight hundred eighty-nine thousand, nine hundred sixteen".