8891065 has 4 divisors (see below), whose sum is σ = 10669284. Its totient is φ = 7112848.

The previous prime is 8891059. The next prime is 8891083. The reversal of 8891065 is 5601988.

8891065 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4826809 + 4064256 = 2197^2 + 2016^2 .

It is a cyclic number.

It is not a de Polignac number, because 8891065 - 2⁵ = 8891033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889102 + ... + 889111.

It is an arithmetic number, because the mean of its divisors is an integer number (2667321).

Almost surely, 2^8891065 is an apocalyptic number.

It is an amenable number.

8891065 is a deficient number, since it is larger than the sum of its proper divisors (1778219).

8891065 is a wasteful number, since it uses less digits than its factorization.

8891065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778218.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 8891065 is about 2981.7888925945. The cubic root of 8891065 is about 207.1657365589.

It can be divided in two parts, 889106 and 5, that added together give a triangular number (889111 = T₁₃₃₃).

The spelling of 8891065 in words is "eight million, eight hundred ninety-one thousand, sixty-five".