866113 has 4 divisors (see below), whose sum is σ = 875140. Its totient is φ = 857088.

The previous prime is 866101. The next prime is 866119. The reversal of 866113 is 311668.

866113 is digitally balanced in base 2, 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 173889 + 692224 = 417^2 + 832^2 .

It is a cyclic number.

It is not a de Polignac number, because 866113 - 2⁵ = 866081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866119) 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, 4368 + ... + 4561.

It is an arithmetic number, because the mean of its divisors is an integer number (218785).

2⁸⁶⁶¹¹³ is an apocalyptic number.

It is an amenable number.

866113 is a deficient number, since it is larger than the sum of its proper divisors (9027).

866113 is an equidigital number, since it uses as much as digits as its factorization.

866113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9026.

The product of its digits is 864, while the sum is 25.

The square root of 866113 is about 930.6519220417. The cubic root of 866113 is about 95.3216429284.

It can be divided in two parts, 866 and 113, that added together give a palindrome (979).

The spelling of 866113 in words is "eight hundred sixty-six thousand, one hundred thirteen".