6856823 has 8 divisors (see below), whose sum is σ = 7063056. Its totient is φ = 6652800.

The previous prime is 6856819. The next prime is 6856841. The reversal of 6856823 is 3286586.

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 6856823 - 2² = 6856819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7343 + ... + 8223.

It is an arithmetic number, because the mean of its divisors is an integer number (882882).

Almost surely, 2^6856823 is an apocalyptic number.

6856823 is a deficient number, since it is larger than the sum of its proper divisors (206233).

6856823 is a wasteful number, since it uses less digits than its factorization.

6856823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its digits is 69120, while the sum is 38.

The square root of 6856823 is about 2618.5536083877. The cubic root of 6856823 is about 189.9798963032.

The spelling of 6856823 in words is "six million, eight hundred fifty-six thousand, eight hundred twenty-three".