8661065 has 16 divisors (see below), whose sum is σ = 11975040. Its totient is φ = 5890560.

The previous prime is 8661061. The next prime is 8661089. The reversal of 8661065 is 5601668.

It is not a de Polignac number, because 8661065 - 2² = 8661061 is a prime.

It is a super-4 number, since 4×8661065⁴ (a number of 29 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (8661061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3641 + ... + 5529.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^8661065 is an apocalyptic number.

It is an amenable number.

8661065 is a deficient number, since it is larger than the sum of its proper divisors (3313975).

8661065 is a wasteful number, since it uses less digits than its factorization.

8661065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 8661065 is about 2942.9687392156. The cubic root of 8661065 is about 205.3637404956.

The spelling of 8661065 in words is "eight million, six hundred sixty-one thousand, sixty-five".