16626223 has 2 divisors, whose sum is σ = 16626224. Its totient is φ = 16626222.

The previous prime is 16626173. The next prime is 16626229. The reversal of 16626223 is 32262661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16626223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16626191 and 16626200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16626229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8313111 + 8313112.

It is an arithmetic number, because the mean of its divisors is an integer number (8313112).

Almost surely, 2^16626223 is an apocalyptic number.

16626223 is a deficient number, since it is larger than the sum of its proper divisors (1).

16626223 is an equidigital number, since it uses as much as digits as its factorization.

16626223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 16626223 is about 4077.5265786994. The cubic root of 16626223 is about 255.2296943579.

Adding to 16626223 its reverse (32262661), we get a palindrome (48888884).

The spelling of 16626223 in words is "sixteen million, six hundred twenty-six thousand, two hundred twenty-three".