6813223 has 4 divisors (see below), whose sum is σ = 6820128. Its totient is φ = 6806320.

The previous prime is 6813199. The next prime is 6813227. The reversal of 6813223 is 3223186.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3223186 = 2 ⋅1611593.

It is a cyclic number.

It is not a de Polignac number, because 6813223 - 2⁹ = 6812711 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 (6813227) 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, 1663 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (1705032).

Almost surely, 2^6813223 is an apocalyptic number.

6813223 is a deficient number, since it is larger than the sum of its proper divisors (6905).

6813223 is a wasteful number, since it uses less digits than its factorization.

6813223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6904.

The product of its digits is 1728, while the sum is 25.

The square root of 6813223 is about 2610.2151252339. The cubic root of 6813223 is about 189.5763691789.

The spelling of 6813223 in words is "six million, eight hundred thirteen thousand, two hundred twenty-three".