6856224 has 24 divisors (see below), whose sum is σ = 17997840. Its totient is φ = 2285376.

The previous prime is 6856189. The next prime is 6856229. The reversal of 6856224 is 4226586.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (6856229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35614 + ... + 35805.

It is an arithmetic number, because the mean of its divisors is an integer number (749910).

Almost surely, 2^6856224 is an apocalyptic number.

It is an amenable number.

6856224 is an abundant number, since it is smaller than the sum of its proper divisors (11141616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6856224 is a wasteful number, since it uses less digits than its factorization.

6856224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71432 (or 71424 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 6856224 is about 2618.4392297703. The cubic root of 6856224 is about 189.9743640389.

It can be divided in two parts, 68562 and 24, that added together give a palindrome (68586).

The spelling of 6856224 in words is "six million, eight hundred fifty-six thousand, two hundred twenty-four".