63444866 has 16 divisors (see below), whose sum is σ = 100742400. Its totient is φ = 29915088.

The previous prime is 63444863. The next prime is 63444907. The reversal of 63444866 is 66844436.

It is not an unprimeable number, because it can be changed into a prime (63444863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10226 + ... + 15213.

It is an arithmetic number, because the mean of its divisors is an integer number (6296400).

Almost surely, 2^63444866 is an apocalyptic number.

63444866 is a deficient number, since it is larger than the sum of its proper divisors (37297534).

63444866 is a wasteful number, since it uses less digits than its factorization.

63444866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25513.

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

The square root of 63444866 is about 7965.2285591815. The cubic root of 63444866 is about 398.8401107265.

The spelling of 63444866 in words is "sixty-three million, four hundred forty-four thousand, eight hundred sixty-six".