63965911 has 2 divisors, whose sum is σ = 63965912. Its totient is φ = 63965910.

The previous prime is 63965903. The next prime is 63965939. The reversal of 63965911 is 11956936.

63965911 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 not a de Polignac number, because 63965911 - 2³ = 63965903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63965981) 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, 31982955 + 31982956.

It is an arithmetic number, because the mean of its divisors is an integer number (31982956).

Almost surely, 2^63965911 is an apocalyptic number.

63965911 is a deficient number, since it is larger than the sum of its proper divisors (1).

63965911 is an equidigital number, since it uses as much as digits as its factorization.

63965911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 63965911 is about 7997.8691537184. The cubic root of 63965911 is about 399.9289686371.

The spelling of 63965911 in words is "sixty-three million, nine hundred sixty-five thousand, nine hundred eleven".