63966823 has 2 divisors, whose sum is σ = 63966824. Its totient is φ = 63966822.

The previous prime is 63966809. The next prime is 63966839. The reversal of 63966823 is 32866936.

63966823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63966823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63966823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63966803) 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, 31983411 + 31983412.

It is an arithmetic number, because the mean of its divisors is an integer number (31983412).

Almost surely, 2^63966823 is an apocalyptic number.

63966823 is a deficient number, since it is larger than the sum of its proper divisors (1).

63966823 is an equidigital number, since it uses as much as digits as its factorization.

63966823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 63966823 is about 7997.9261687015. The cubic root of 63966823 is about 399.9308693031.

The spelling of 63966823 in words is "sixty-three million, nine hundred sixty-six thousand, eight hundred twenty-three".