8660881 has 4 divisors (see below), whose sum is σ = 8872164. Its totient is φ = 8449600.

The previous prime is 8660863. The next prime is 8660887. The reversal of 8660881 is 1880668.

8660881 = T₄₁₈ + T₄₁₉ + ... + T₄₉₉.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 731025 + 7929856 = 855^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 8660881 - 2⁷ = 8660753 is a prime.

It is a super-2 number, since 2×8660881² = 150021719392322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8660881.

It is not an unprimeable number, because it can be changed into a prime (8660887) 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, 105580 + ... + 105661.

It is an arithmetic number, because the mean of its divisors is an integer number (2218041).

Almost surely, 2^8660881 is an apocalyptic number.

It is an amenable number.

8660881 is a deficient number, since it is larger than the sum of its proper divisors (211283).

8660881 is a wasteful number, since it uses less digits than its factorization.

8660881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211282.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 8660881 is about 2942.9374780991. The cubic root of 8660881 is about 205.3622862019.

The spelling of 8660881 in words is "eight million, six hundred sixty thousand, eight hundred eighty-one".