8666013 has 4 divisors (see below), whose sum is σ = 11554688. Its totient is φ = 5777340.

The previous prime is 8665999. The next prime is 8666017. The reversal of 8666013 is 3106668.

8666013 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8666013 - 2⁶ = 8665949 is a prime.

It is a Duffinian number.

8666013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8666017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1444333 + ... + 1444338.

It is an arithmetic number, because the mean of its divisors is an integer number (2888672).

Almost surely, 2^8666013 is an apocalyptic number.

It is an amenable number.

8666013 is a deficient number, since it is larger than the sum of its proper divisors (2888675).

8666013 is a wasteful number, since it uses less digits than its factorization.

8666013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888674.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 8666013 is about 2943.8092669193. The cubic root of 8666013 is about 205.4028406272.

The spelling of 8666013 in words is "eight million, six hundred sixty-six thousand, thirteen".