8118665 has 4 divisors (see below), whose sum is σ = 9742404. Its totient is φ = 6494928.

The previous prime is 8118661. The next prime is 8118679. The reversal of 8118665 is 5668118.

8118665 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 3924361 + 4194304 = 1981^2 + 2048^2 .

It is a cyclic number.

It is not a de Polignac number, because 8118665 - 2² = 8118661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8118661) by changing a digit.

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, 811862 + ... + 811871.

It is an arithmetic number, because the mean of its divisors is an integer number (2435601).

Almost surely, 2^8118665 is an apocalyptic number.

It is an amenable number.

8118665 is a deficient number, since it is larger than the sum of its proper divisors (1623739).

8118665 is a wasteful number, since it uses less digits than its factorization.

8118665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623738.

The product of its digits is 11520, while the sum is 35.

The square root of 8118665 is about 2849.3271135480. The cubic root of 8118665 is about 200.9840255285.

The spelling of 8118665 in words is "eight million, one hundred eighteen thousand, six hundred sixty-five".