63978814 has 16 divisors (see below), whose sum is σ = 104504400. Its totient is φ = 29260224.

The previous prime is 63978793. The next prime is 63978821. The reversal of 63978814 is 41887936.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27927 + ... + 30130.

It is an arithmetic number, because the mean of its divisors is an integer number (6531525).

Almost surely, 2^63978814 is an apocalyptic number.

63978814 is a deficient number, since it is larger than the sum of its proper divisors (40525586).

63978814 is a wasteful number, since it uses less digits than its factorization.

63978814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58107.

The product of its digits is 290304, while the sum is 46.

The square root of 63978814 is about 7998.6757654002. The cubic root of 63978814 is about 399.9558576288.

The spelling of 63978814 in words is "sixty-three million, nine hundred seventy-eight thousand, eight hundred fourteen".