866233 has 4 divisors (see below), whose sum is σ = 894208. Its totient is φ = 838260.

The previous prime is 866231. The next prime is 866279. The reversal of 866233 is 332668.

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 a cyclic number.

It is not a de Polignac number, because 866233 - 2¹ = 866231 is a prime.

It is a super-2 number, since 2×866233² = 1500719220578, which contains 22 as substring.

It is a Duffinian number.

866233 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (866231) 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, 13941 + ... + 14002.

It is an arithmetic number, because the mean of its divisors is an integer number (223552).

2⁸⁶⁶²³³ is an apocalyptic number.

It is an amenable number.

866233 is a deficient number, since it is larger than the sum of its proper divisors (27975).

866233 is a wasteful number, since it uses less digits than its factorization.

866233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27974.

The product of its digits is 5184, while the sum is 28.

The square root of 866233 is about 930.7163907442. The cubic root of 866233 is about 95.3260449979.

The spelling of 866233 in words is "eight hundred sixty-six thousand, two hundred thirty-three".