6867881 has 4 divisors (see below), whose sum is σ = 7271892. Its totient is φ = 6463872.

The previous prime is 6867871. The next prime is 6867907. The reversal of 6867881 is 1887686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1887686 = 2 ⋅943843.

It can be written as a sum of positive squares in 2 ways, for example, as 5216656 + 1651225 = 2284^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 6867881 - 2¹⁴ = 6851497 is a prime.

It is a super-2 number, since 2×6867881² = 94335578860322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6867821) 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, 201980 + ... + 202013.

It is an arithmetic number, because the mean of its divisors is an integer number (1817973).

Almost surely, 2^6867881 is an apocalyptic number.

It is an amenable number.

6867881 is a deficient number, since it is larger than the sum of its proper divisors (404011).

6867881 is a wasteful number, since it uses less digits than its factorization.

6867881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404010.

The product of its digits is 129024, while the sum is 44.

The square root of 6867881 is about 2620.6642287787. The cubic root of 6867881 is about 190.0819683262.

The spelling of 6867881 in words is "six million, eight hundred sixty-seven thousand, eight hundred eighty-one".