6858663 has 16 divisors (see below), whose sum is σ = 10675200. Its totient is φ = 3835296.

The previous prime is 6858661. The next prime is 6858673. The reversal of 6858663 is 3668586.

6858663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6858663 - 2¹ = 6858661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6858661) 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 15 ways as a sum of consecutive naturals, for example, 2488 + ... + 4461.

It is an arithmetic number, because the mean of its divisors is an integer number (667200).

Almost surely, 2^6858663 is an apocalyptic number.

6858663 is a deficient number, since it is larger than the sum of its proper divisors (3816537).

6858663 is a wasteful number, since it uses less digits than its factorization.

6858663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006.

The product of its digits is 207360, while the sum is 42.

The square root of 6858663 is about 2618.9049238184. The cubic root of 6858663 is about 189.9968882224.

The spelling of 6858663 in words is "six million, eight hundred fifty-eight thousand, six hundred sixty-three".