8445665 has 16 divisors (see below), whose sum is σ = 10499328. Its totient is φ = 6518016.

The previous prime is 8445659. The next prime is 8445677. The reversal of 8445665 is 5665448.

It is a cyclic number.

It is not a de Polignac number, because 8445665 - 2⁴ = 8445649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19289 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (656208).

Almost surely, 2^8445665 is an apocalyptic number.

It is an amenable number.

8445665 is a deficient number, since it is larger than the sum of its proper divisors (2053663).

8445665 is a wasteful number, since it uses less digits than its factorization.

8445665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its digits is 115200, while the sum is 38.

The square root of 8445665 is about 2906.1426324253. The cubic root of 8445665 is about 203.6469688729.

The spelling of 8445665 in words is "eight million, four hundred forty-five thousand, six hundred sixty-five".