8045665 has 16 divisors (see below), whose sum is σ = 9970128. Its totient is φ = 6230016.

The previous prime is 8045663. The next prime is 8045669. The reversal of 8045665 is 5665408.

8045665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 868624 + 7177041 = 932^2 + 2679^2 .

It is a cyclic number.

It is not a de Polignac number, because 8045665 - 2¹ = 8045663 is a prime.

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 8045665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8045663) by changing a digit.

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, 25549 + ... + 25861.

It is an arithmetic number, because the mean of its divisors is an integer number (623133).

Almost surely, 2^8045665 is an apocalyptic number.

It is an amenable number.

8045665 is a deficient number, since it is larger than the sum of its proper divisors (1924463).

8045665 is a wasteful number, since it uses less digits than its factorization.

8045665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 8045665 is about 2836.4881455772. The cubic root of 8045665 is about 200.3798198943.

The spelling of 8045665 in words is "eight million, forty-five thousand, six hundred sixty-five".