63968967 has 16 divisors (see below), whose sum is σ = 97331680. Its totient is φ = 41492736.

The previous prime is 63968963. The next prime is 63969001. The reversal of 63968967 is 76986936.

It is a happy number.

63968967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63968967 - 2² = 63968963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63968963) 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 in 15 ways as a sum of consecutive naturals, for example, 31018 + ... + 33015.

It is an arithmetic number, because the mean of its divisors is an integer number (6083230).

Almost surely, 2^63968967 is an apocalyptic number.

63968967 is a deficient number, since it is larger than the sum of its proper divisors (33362713).

63968967 is a wasteful number, since it uses less digits than its factorization.

63968967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64079 (or 64073 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 63968967 is about 7998.0602023241. The cubic root of 63968967 is about 399.9353374641.

The spelling of 63968967 in words is "sixty-three million, nine hundred sixty-eight thousand, nine hundred sixty-seven".