866135 has 8 divisors (see below), whose sum is σ = 1044576. Its totient is φ = 689440.

The previous prime is 866123. The next prime is 866161. The reversal of 866135 is 531668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866135 - 2⁴ = 866119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 866098 and 866107.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1277 + ... + 1833.

It is an arithmetic number, because the mean of its divisors is an integer number (130572).

2⁸⁶⁶¹³⁵ is an apocalyptic number.

866135 is a deficient number, since it is larger than the sum of its proper divisors (178441).

866135 is a wasteful number, since it uses less digits than its factorization.

866135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873.

The product of its digits is 4320, while the sum is 29.

The square root of 866135 is about 930.6637416382. The cubic root of 866135 is about 95.3224500049.

It can be divided in two parts, 866 and 135, that added together give a palindrome (1001).

The spelling of 866135 in words is "eight hundred sixty-six thousand, one hundred thirty-five".