6855563 has 16 divisors (see below), whose sum is σ = 8128512. Its totient is φ = 5700000.

The previous prime is 6855529. The next prime is 6855593. The reversal of 6855563 is 3655586.

It is a cyclic number.

It is not a de Polignac number, because 6855563 - 2⁸ = 6855307 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (6855593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27188 + ... + 27438.

It is an arithmetic number, because the mean of its divisors is an integer number (508032).

Almost surely, 2^6855563 is an apocalyptic number.

6855563 is a deficient number, since it is larger than the sum of its proper divisors (1272949).

6855563 is a wasteful number, since it uses less digits than its factorization.

6855563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466.

The product of its digits is 108000, while the sum is 38.

The square root of 6855563 is about 2618.3130064987. The cubic root of 6855563 is about 189.9682587789.

The spelling of 6855563 in words is "six million, eight hundred fifty-five thousand, five hundred sixty-three".