16671223 has 4 divisors (see below), whose sum is σ = 16824280. Its totient is φ = 16518168.

The previous prime is 16671209. The next prime is 16671233. The reversal of 16671223 is 32217661.

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 16671223 - 2²¹ = 14574071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16671191 and 16671200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16671233) 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, 76365 + ... + 76582.

It is an arithmetic number, because the mean of its divisors is an integer number (4206070).

Almost surely, 2^16671223 is an apocalyptic number.

16671223 is a deficient number, since it is larger than the sum of its proper divisors (153057).

16671223 is a wasteful number, since it uses less digits than its factorization.

16671223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153056.

The product of its digits is 3024, while the sum is 28.

The square root of 16671223 is about 4083.0409010932. The cubic root of 16671223 is about 255.4597524184.

Adding to 16671223 its reverse (32217661), we get a palindrome (48888884).

The spelling of 16671223 in words is "sixteen million, six hundred seventy-one thousand, two hundred twenty-three".