6856159 has 2 divisors, whose sum is σ = 6856160. Its totient is φ = 6856158.

The previous prime is 6856153. The next prime is 6856181. The reversal of 6856159 is 9516586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6856159 - 2⁵ = 6856127 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6856153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428079 + 3428080.

It is an arithmetic number, because the mean of its divisors is an integer number (3428080).

Almost surely, 2^6856159 is an apocalyptic number.

6856159 is a deficient number, since it is larger than the sum of its proper divisors (1).

6856159 is an equidigital number, since it uses as much as digits as its factorization.

6856159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 6856159 is about 2618.4268177667. The cubic root of 6856159 is about 189.9737636903.

The spelling of 6856159 in words is "six million, eight hundred fifty-six thousand, one hundred fifty-nine".