16672223 has 4 divisors (see below), whose sum is σ = 17652960. Its totient is φ = 15691488.

The previous prime is 16672207. The next prime is 16672231. The reversal of 16672223 is 32227661.

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 16672223 - 2⁴ = 16672207 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 (16672273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490343 + ... + 490376.

It is an arithmetic number, because the mean of its divisors is an integer number (4413240).

Almost surely, 2^16672223 is an apocalyptic number.

16672223 is a deficient number, since it is larger than the sum of its proper divisors (980737).

16672223 is an equidigital number, since it uses as much as digits as its factorization.

16672223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980736.

The product of its digits is 6048, while the sum is 29.

The square root of 16672223 is about 4083.1633570064. The cubic root of 16672223 is about 255.4648601150.

Adding to 16672223 its reverse (32227661), we get a palindrome (48899884).

The spelling of 16672223 in words is "sixteen million, six hundred seventy-two thousand, two hundred twenty-three".