6378863 has 2 divisors, whose sum is σ = 6378864. Its totient is φ = 6378862.

The previous prime is 6378847. The next prime is 6378871. The reversal of 6378863 is 3688736.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6378863 - 2⁴ = 6378847 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6378863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6378563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3189431 + 3189432.

It is an arithmetic number, because the mean of its divisors is an integer number (3189432).

Almost surely, 2^6378863 is an apocalyptic number.

6378863 is a deficient number, since it is larger than the sum of its proper divisors (1).

6378863 is an equidigital number, since it uses as much as digits as its factorization.

6378863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 6378863 is about 2525.6411067291. The cubic root of 6378863 is about 185.4589336178.

The spelling of 6378863 in words is "six million, three hundred seventy-eight thousand, eight hundred sixty-three".