6881181 has 4 divisors (see below), whose sum is σ = 9174912. Its totient is φ = 4587452.

The previous prime is 6881167. The next prime is 6881183. The reversal of 6881181 is 1811886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6881181 - 2¹⁰ = 6880157 is a prime.

It is a super-2 number, since 2×6881181² = 94701303909522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881183) 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, 1146861 + ... + 1146866.

It is an arithmetic number, because the mean of its divisors is an integer number (2293728).

Almost surely, 2^6881181 is an apocalyptic number.

It is an amenable number.

6881181 is a deficient number, since it is larger than the sum of its proper divisors (2293731).

6881181 is a wasteful number, since it uses less digits than its factorization.

6881181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293730.

The product of its digits is 3072, while the sum is 33.

The square root of 6881181 is about 2623.2005260750. The cubic root of 6881181 is about 190.2045903308.

The spelling of 6881181 in words is "six million, eight hundred eighty-one thousand, one hundred eighty-one".