63978883 has 8 divisors (see below), whose sum is σ = 67237808. Its totient is φ = 60800544.

The previous prime is 63978857. The next prime is 63978899. The reversal of 63978883 is 38887936.

It is a happy number.

63978883 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63978883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63978883.

It is not an unprimeable number, because it can be changed into a prime (63978853) 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 7 ways as a sum of consecutive naturals, for example, 18516 + ... + 21697.

It is an arithmetic number, because the mean of its divisors is an integer number (8404726).

Almost surely, 2^63978883 is an apocalyptic number.

63978883 is a deficient number, since it is larger than the sum of its proper divisors (3258925).

63978883 is a wasteful number, since it uses less digits than its factorization.

63978883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40293.

The product of its digits is 1741824, while the sum is 52.

The square root of 63978883 is about 7998.6800786130. The cubic root of 63978883 is about 399.9560014105.

The spelling of 63978883 in words is "sixty-three million, nine hundred seventy-eight thousand, eight hundred eighty-three".