63750866 has 4 divisors (see below), whose sum is σ = 95626302. Its totient is φ = 31875432.

The previous prime is 63750839. The next prime is 63750881. The reversal of 63750866 is 66805736.

63750866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38700841 + 25050025 = 6221^2 + 5005^2 .

It is a Curzon number.

It is an unprimeable number.

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, 15937715 + ... + 15937718.

Almost surely, 2^63750866 is an apocalyptic number.

63750866 is a deficient number, since it is larger than the sum of its proper divisors (31875436).

63750866 is a wasteful number, since it uses less digits than its factorization.

63750866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31875435.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 63750866 is about 7984.4139421751. The cubic root of 63750866 is about 399.4802958949.

The spelling of 63750866 in words is "sixty-three million, seven hundred fifty thousand, eight hundred sixty-six".