6881129 has 4 divisors (see below), whose sum is σ = 7027584. Its totient is φ = 6734676.

The previous prime is 6881123. The next prime is 6881131. The reversal of 6881129 is 9211886.

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 6881129 - 2⁴ = 6881113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6881123) 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, 73157 + ... + 73250.

It is an arithmetic number, because the mean of its divisors is an integer number (1756896).

Almost surely, 2^6881129 is an apocalyptic number.

It is an amenable number.

6881129 is a deficient number, since it is larger than the sum of its proper divisors (146455).

6881129 is a wasteful number, since it uses less digits than its factorization.

6881129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146454.

The product of its digits is 6912, while the sum is 35.

The square root of 6881129 is about 2623.1906144998. The cubic root of 6881129 is about 190.2041112143.

The spelling of 6881129 in words is "six million, eight hundred eighty-one thousand, one hundred twenty-nine".