6855387 has 32 divisors (see below), whose sum is σ = 11612160. Its totient is φ = 3493920.

The previous prime is 6855379. The next prime is 6855413. The reversal of 6855387 is 7835586.

6855387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6855387 - 2³ = 6855379 is a prime.

6855387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6855307) 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 31 ways as a sum of consecutive naturals, for example, 13378 + ... + 13880.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

Almost surely, 2^6855387 is an apocalyptic number.

6855387 is a deficient number, since it is larger than the sum of its proper divisors (4756773).

6855387 is a wasteful number, since it uses less digits than its factorization.

6855387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its digits is 201600, while the sum is 42.

The square root of 6855387 is about 2618.2793968559. The cubic root of 6855387 is about 189.9666331064.

It can be divided in two parts, 68 and 55387, that added together give a palindrome (55455).

The spelling of 6855387 in words is "six million, eight hundred fifty-five thousand, three hundred eighty-seven".