6549423 has 4 divisors (see below), whose sum is σ = 8732568. Its totient is φ = 4366280.

The previous prime is 6549391. The next prime is 6549467. The reversal of 6549423 is 3249456.

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 6549423 - 2⁵ = 6549391 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 5⁷ + 4⁴ + 9 + 4⁴ + 2¹³ + 3¹⁴ .

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6549493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091568 + ... + 1091573.

It is an arithmetic number, because the mean of its divisors is an integer number (2183142).

Almost surely, 2^6549423 is an apocalyptic number.

6549423 is a deficient number, since it is larger than the sum of its proper divisors (2183145).

6549423 is a wasteful number, since it uses less digits than its factorization.

6549423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183144.

The product of its digits is 25920, while the sum is 33.

The square root of 6549423 is about 2559.1840496533. The cubic root of 6549423 is about 187.0973689115.

Adding to 6549423 its sum of digits (33), we get a palindrome (6549456).

The spelling of 6549423 in words is "six million, five hundred forty-nine thousand, four hundred twenty-three".