6678563 has 4 divisors (see below), whose sum is σ = 6685200. Its totient is φ = 6671928.

The previous prime is 6678523. The next prime is 6678577. The reversal of 6678563 is 3658766.

6678563 is digitally balanced in base 3, 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6678563 - 2⁶ = 6678499 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 6678563.

It is not an unprimeable number, because it can be changed into a prime (6678523) 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, 1463 + ... + 3936.

It is an arithmetic number, because the mean of its divisors is an integer number (1671300).

Almost surely, 2^6678563 is an apocalyptic number.

6678563 is a deficient number, since it is larger than the sum of its proper divisors (6637).

6678563 is a wasteful number, since it uses less digits than its factorization.

6678563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6636.

The product of its digits is 181440, while the sum is 41.

The square root of 6678563 is about 2584.2915857155. The cubic root of 6678563 is about 188.3190880359.

The spelling of 6678563 in words is "six million, six hundred seventy-eight thousand, five hundred sixty-three".