8661105 has 24 divisors (see below), whose sum is σ = 15104232. Its totient is φ = 4591104.

The previous prime is 8661089. The next prime is 8661119. The reversal of 8661105 is 5011668.

It can be written as a sum of positive squares in 4 ways, for example, as 5377761 + 3283344 = 2319^2 + 1812^2 .

It is not a de Polignac number, because 8661105 - 2⁴ = 8661089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8377 + ... + 9353.

It is an arithmetic number, because the mean of its divisors is an integer number (629343).

Almost surely, 2^8661105 is an apocalyptic number.

It is an amenable number.

8661105 is a deficient number, since it is larger than the sum of its proper divisors (6443127).

8661105 is a wasteful number, since it uses less digits than its factorization.

8661105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 8661105 is about 2942.9755350665. The cubic root of 8661105 is about 205.3640566436.

The spelling of 8661105 in words is "eight million, six hundred sixty-one thousand, one hundred five".