6887889 has 8 divisors (see below), whose sum is σ = 10204320. Its totient is φ = 4591908.

The previous prime is 6887863. The next prime is 6887893. The reversal of 6887889 is 9887886.

6887889 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 6887889 - 2¹⁶ = 6822353 is a prime.

6887889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6887389) 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, 127527 + ... + 127580.

It is an arithmetic number, because the mean of its divisors is an integer number (1275540).

Almost surely, 2^6887889 is an apocalyptic number.

It is an amenable number.

6887889 is a deficient number, since it is larger than the sum of its proper divisors (3316431).

6887889 is a wasteful number, since it uses less digits than its factorization.

6887889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255116 (or 255110 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 6887889 is about 2624.4788054012. The cubic root of 6887889 is about 190.2663761407.

It can be divided in two parts, 6887 and 889, that added together give a 5-th power (7776 = 6⁵).

The spelling of 6887889 in words is "six million, eight hundred eighty-seven thousand, eight hundred eighty-nine".