6856163 has 4 divisors (see below), whose sum is σ = 6895968. Its totient is φ = 6816360.

The previous prime is 6856159. The next prime is 6856181. The reversal of 6856163 is 3616586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3616586 = 2 ⋅1808293.

It is a cyclic number.

It is not a de Polignac number, because 6856163 - 2² = 6856159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6856103) 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 3 ways as a sum of consecutive naturals, for example, 19643 + ... + 19988.

It is an arithmetic number, because the mean of its divisors is an integer number (1723992).

Almost surely, 2^6856163 is an apocalyptic number.

6856163 is a deficient number, since it is larger than the sum of its proper divisors (39805).

6856163 is a wasteful number, since it uses less digits than its factorization.

6856163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39804.

The product of its digits is 25920, while the sum is 35.

The square root of 6856163 is about 2618.4275815840. The cubic root of 6856163 is about 189.9738006350.

The spelling of 6856163 in words is "six million, eight hundred fifty-six thousand, one hundred sixty-three".