8396665 has 4 divisors (see below), whose sum is σ = 10076004. Its totient is φ = 6717328.

The previous prime is 8396639. The next prime is 8396693. The reversal of 8396665 is 5666938.

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 4380649 + 4016016 = 2093^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 8396665 - 2¹³ = 8388473 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839662 + ... + 839671.

It is an arithmetic number, because the mean of its divisors is an integer number (2519001).

Almost surely, 2^8396665 is an apocalyptic number.

It is an amenable number.

8396665 is a deficient number, since it is larger than the sum of its proper divisors (1679339).

8396665 is a wasteful number, since it uses less digits than its factorization.

8396665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679338.

The product of its digits is 233280, while the sum is 43.

The square root of 8396665 is about 2897.6999499603. The cubic root of 8396665 is about 203.2523655650.

The spelling of 8396665 in words is "eight million, three hundred ninety-six thousand, six hundred sixty-five".