6544423 has 2 divisors, whose sum is σ = 6544424. Its totient is φ = 6544422.

The previous prime is 6544411. The next prime is 6544427. The reversal of 6544423 is 3244456.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6544423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6544391 and 6544400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6544427) 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 as a sum of consecutive naturals, namely, 3272211 + 3272212.

It is an arithmetic number, because the mean of its divisors is an integer number (3272212).

Almost surely, 2^6544423 is an apocalyptic number.

6544423 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544423 is an equidigital number, since it uses as much as digits as its factorization.

6544423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 28.

The square root of 6544423 is about 2558.2069892798. The cubic root of 6544423 is about 187.0497451232.

Adding to 6544423 its reverse (3244456), we get a palindrome (9788879).

The spelling of 6544423 in words is "six million, five hundred forty-four thousand, four hundred twenty-three".