6543223 has 2 divisors, whose sum is σ = 6543224. Its totient is φ = 6543222.

The previous prime is 6543203. The next prime is 6543233. The reversal of 6543223 is 3223456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6543223 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 5⁵ + 4⁷ + 3¹⁰ + 2⁵ + 2¹¹ + 3¹⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6543203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271611 + 3271612.

It is an arithmetic number, because the mean of its divisors is an integer number (3271612).

Almost surely, 2^6543223 is an apocalyptic number.

6543223 is a deficient number, since it is larger than the sum of its proper divisors (1).

6543223 is an equidigital number, since it uses as much as digits as its factorization.

6543223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 25.

The square root of 6543223 is about 2557.9724392573. The cubic root of 6543223 is about 187.0383118048.

Adding to 6543223 its reverse (3223456), we get a palindrome (9766679).

The spelling of 6543223 in words is "six million, five hundred forty-three thousand, two hundred twenty-three".