868243 has 4 divisors (see below), whose sum is σ = 913960. Its totient is φ = 822528.

The previous prime is 868229. The next prime is 868249. The reversal of 868243 is 342868.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868243 - 2⁵ = 868211 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (868249) 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, 22830 + ... + 22867.

It is an arithmetic number, because the mean of its divisors is an integer number (228490).

2⁸⁶⁸²⁴³ is an apocalyptic number.

868243 is a deficient number, since it is larger than the sum of its proper divisors (45717).

868243 is a wasteful number, since it uses less digits than its factorization.

868243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45716.

The product of its digits is 9216, while the sum is 31.

The square root of 868243 is about 931.7955784398. The cubic root of 868243 is about 95.3997193024.

It can be divided in two parts, 868 and 243, that added together give a palindrome (1111).

The spelling of 868243 in words is "eight hundred sixty-eight thousand, two hundred forty-three".