63989078 has 4 divisors (see below), whose sum is σ = 95983620. Its totient is φ = 31994538.

The previous prime is 63989063. The next prime is 63989083. The reversal of 63989078 is 87098936.

63989078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15997268 + ... + 15997271.

It is an arithmetic number, because the mean of its divisors is an integer number (23995905).

Almost surely, 2^63989078 is an apocalyptic number.

63989078 is a deficient number, since it is larger than the sum of its proper divisors (31994542).

63989078 is a wasteful number, since it uses less digits than its factorization.

63989078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31994541.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 63989078 is about 7999.3173458740. The cubic root of 63989078 is about 399.9772445388.

The spelling of 63989078 in words is "sixty-three million, nine hundred eighty-nine thousand, seventy-eight".