6889871 has 6 divisors (see below), whose sum is σ = 7041840. Its totient is φ = 6741116.

The previous prime is 6889859. The next prime is 6889873. The reversal of 6889871 is 1789886.

It is not a de Polignac number, because 6889871 - 2¹⁸ = 6627727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6889873) 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 5 ways as a sum of consecutive naturals, for example, 650 + ... + 3768.

It is an arithmetic number, because the mean of its divisors is an integer number (1173640).

Almost surely, 2^6889871 is an apocalyptic number.

6889871 is a deficient number, since it is larger than the sum of its proper divisors (151969).

6889871 is an equidigital number, since it uses as much as digits as its factorization.

6889871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213 (or 3166 counting only the distinct ones).

The product of its digits is 193536, while the sum is 47.

The square root of 6889871 is about 2624.8563770233. The cubic root of 6889871 is about 190.2846241986.

The spelling of 6889871 in words is "six million, eight hundred eighty-nine thousand, eight hundred seventy-one".