8665881 has 32 divisors (see below), whose sum is σ = 14300160. Its totient is φ = 4556736.

The previous prime is 8665873. The next prime is 8665889. The reversal of 8665881 is 1885668.

8665881 is nontrivially palindromic in base 11.

8665881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8665873) and next prime (8665889).

It is not a de Polignac number, because 8665881 - 2³ = 8665873 is a prime.

It is a super-2 number, since 2×8665881² = 150194987012322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8665889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14470 + ... + 15056.

It is an arithmetic number, because the mean of its divisors is an integer number (446880).

Almost surely, 2^8665881 is an apocalyptic number.

It is an amenable number.

8665881 is a deficient number, since it is larger than the sum of its proper divisors (5634279).

8665881 is a wasteful number, since it uses less digits than its factorization.

8665881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653.

The product of its digits is 92160, while the sum is 42.

The square root of 8665881 is about 2943.7868469032. The cubic root of 8665881 is about 205.4017977288.

The spelling of 8665881 in words is "eight million, six hundred sixty-five thousand, eight hundred eighty-one".