6856223 has 6 divisors (see below), whose sum is σ = 7536312. Its totient is φ = 6232820.

The previous prime is 6856189. The next prime is 6856229. The reversal of 6856223 is 3226586.

It is not a de Polignac number, because 6856223 - 2⁶ = 6856159 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 6856223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856229) 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 5 ways as a sum of consecutive naturals, for example, 28211 + ... + 28452.

It is an arithmetic number, because the mean of its divisors is an integer number (1256052).

Almost surely, 2^6856223 is an apocalyptic number.

6856223 is a deficient number, since it is larger than the sum of its proper divisors (680089).

6856223 is a wasteful number, since it uses less digits than its factorization.

6856223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56685 (or 56674 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 6856223 is about 2618.4390388168. The cubic root of 6856223 is about 189.9743548028.

The spelling of 6856223 in words is "six million, eight hundred fifty-six thousand, two hundred twenty-three".