6856847 has 8 divisors (see below), whose sum is σ = 7201200. Its totient is φ = 6519744.

The previous prime is 6856841. The next prime is 6856873. The reversal of 6856847 is 7486586.

6856847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6856847 - 2¹⁶ = 6791311 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6856798 and 6856807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179 + ... + 3707.

It is an arithmetic number, because the mean of its divisors is an integer number (900150).

Almost surely, 2^6856847 is an apocalyptic number.

6856847 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6856847 is a deficient number, since it is larger than the sum of its proper divisors (344353).

6856847 is a wasteful number, since it uses less digits than its factorization.

6856847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625.

The product of its digits is 322560, while the sum is 44.

The square root of 6856847 is about 2618.5581910662. The cubic root of 6856847 is about 189.9801179565.

The spelling of 6856847 in words is "six million, eight hundred fifty-six thousand, eight hundred forty-seven".