6859 has 4 divisors (see below), whose sum is σ = 7240. Its totient is φ = 6498.

The previous prime is 6857. The next prime is 6863. The reversal of 6859 is 9586.

The cubic root of 6859 is 19.

It is a perfect power (a cube), and thus also a powerful number.

It is not a de Polignac number, because 6859 - 2¹ = 6857 is a prime.

It is a super-3 number, since 3×6859³ = 968063093337, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 7 and base 14.

It is not an unprimeable number, because it can be changed into a prime (6857) 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, 352 + ... + 370.

It is an arithmetic number, because the mean of its divisors is an integer number (1810).

2⁶⁸⁵⁹ is an apocalyptic number.

6859 is a deficient number, since it is larger than the sum of its proper divisors (381).

6859 is an frugal number, since it uses more digits than its factorization.

6859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 19 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 6859 is about 82.8190799273.

The spelling of 6859 in words is "six thousand, eight hundred fifty-nine".