63968841 has 24 divisors (see below), whose sum is σ = 100998144. Its totient is φ = 38839680.

The previous prime is 63968837. The next prime is 63968843. The reversal of 63968841 is 14886936.

63968841 is a `hidden beast` number, since 639 + 6 + 8 + 8 + 4 + 1 = 666.

It is not a de Polignac number, because 63968841 - 2² = 63968837 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63968843) 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 23 ways as a sum of consecutive naturals, for example, 2001 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (4208256).

Almost surely, 2^63968841 is an apocalyptic number.

It is an amenable number.

63968841 is a deficient number, since it is larger than the sum of its proper divisors (37029303).

63968841 is a wasteful number, since it uses less digits than its factorization.

63968841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13541 (or 13538 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 63968841 is about 7998.0523254102. The cubic root of 63968841 is about 399.9350748791.

The spelling of 63968841 in words is "sixty-three million, nine hundred sixty-eight thousand, eight hundred forty-one".