8611881 has 4 divisors (see below), whose sum is σ = 11482512. Its totient is φ = 5741252.

The previous prime is 8611879. The next prime is 8611891. The reversal of 8611881 is 1881168.

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 8611881 - 2¹ = 8611879 is a prime.

It is a super-2 number, since 2×8611881² = 148328988716322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8611891) 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, 1435311 + ... + 1435316.

It is an arithmetic number, because the mean of its divisors is an integer number (2870628).

Almost surely, 2^8611881 is an apocalyptic number.

It is an amenable number.

8611881 is a deficient number, since it is larger than the sum of its proper divisors (2870631).

8611881 is a wasteful number, since it uses less digits than its factorization.

8611881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870630.

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

The square root of 8611881 is about 2934.6006542629. The cubic root of 8611881 is about 204.9742660539.

The spelling of 8611881 in words is "eight million, six hundred eleven thousand, eight hundred eighty-one".