818223 has 16 divisors (see below), whose sum is σ = 1274880. Its totient is φ = 457056.

The previous prime is 818219. The next prime is 818231. The reversal of 818223 is 322818.

It is not a de Polignac number, because 818223 - 2² = 818219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 818193 and 818202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573 + ... + 1401.

It is an arithmetic number, because the mean of its divisors is an integer number (79680).

2⁸¹⁸²²³ is an apocalyptic number.

818223 is a deficient number, since it is larger than the sum of its proper divisors (456657).

818223 is a wasteful number, since it uses less digits than its factorization.

818223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886.

The product of its digits is 768, while the sum is 24.

The square root of 818223 is about 904.5567975534. The cubic root of 818223 is about 93.5313553602.

The spelling of 818223 in words is "eight hundred eighteen thousand, two hundred twenty-three".