63963964 has 12 divisors (see below), whose sum is σ = 111999888. Its totient is φ = 31964000.

The previous prime is 63963961. The next prime is 63963983. The reversal of 63963964 is 46936936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63963961) 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 3 ways as a sum of consecutive naturals, for example, 6489 + ... + 13039.

It is an arithmetic number, because the mean of its divisors is an integer number (9333324).

Almost surely, 2^63963964 is an apocalyptic number.

It is an amenable number.

63963964 is a deficient number, since it is larger than the sum of its proper divisors (48035924).

63963964 is a wasteful number, since it uses less digits than its factorization.

63963964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996 (or 8994 counting only the distinct ones).

The product of its digits is 629856, while the sum is 46.

The square root of 63963964 is about 7997.7474328713. The cubic root of 63963964 is about 399.9249109050.

The spelling of 63963964 in words is "sixty-three million, nine hundred sixty-three thousand, nine hundred sixty-four".