16605223 has 8 divisors (see below), whose sum is σ = 16848000. Its totient is φ = 16364280.

The previous prime is 16605217. The next prime is 16605227. The reversal of 16605223 is 32250661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16605223 - 2⁹ = 16604711 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 (16605227) 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 in 7 ways as a sum of consecutive naturals, for example, 33028 + ... + 33526.

It is an arithmetic number, because the mean of its divisors is an integer number (2106000).

Almost surely, 2^16605223 is an apocalyptic number.

16605223 is a deficient number, since it is larger than the sum of its proper divisors (242777).

16605223 is a wasteful number, since it uses less digits than its factorization.

16605223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 16605223 is about 4074.9506745481. The cubic root of 16605223 is about 255.1221918548.

Adding to 16605223 its reverse (32250661), we get a palindrome (48855884).

The spelling of 16605223 in words is "sixteen million, six hundred five thousand, two hundred twenty-three".