6866871 has 12 divisors (see below), whose sum is σ = 10064376. Its totient is φ = 4161520.

The previous prime is 6866863. The next prime is 6866879. The reversal of 6866871 is 1786686.

It is an interprime number because it is at equal distance from previous prime (6866863) and next prime (6866879).

It is not a de Polignac number, because 6866871 - 2³ = 6866863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9096 + ... + 9821.

It is an arithmetic number, because the mean of its divisors is an integer number (838698).

Almost surely, 2^6866871 is an apocalyptic number.

6866871 is a deficient number, since it is larger than the sum of its proper divisors (3197505).

6866871 is a wasteful number, since it uses less digits than its factorization.

6866871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18942 (or 18931 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 6866871 is about 2620.4715224555. The cubic root of 6866871 is about 190.0726499644.

It can be divided in two parts, 686 and 6871, that added together give a palindrome (7557).

The spelling of 6866871 in words is "six million, eight hundred sixty-six thousand, eight hundred seventy-one".