16686227 has 2 divisors, whose sum is σ = 16686228. Its totient is φ = 16686226.

The previous prime is 16686217. The next prime is 16686251. The reversal of 16686227 is 72268661.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (72268661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16686227 - 2⁴ = 16686211 is a prime.

It is not a weakly prime, because it can be changed into another prime (16686217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8343113 + 8343114.

It is an arithmetic number, because the mean of its divisors is an integer number (8343114).

Almost surely, 2^16686227 is an apocalyptic number.

16686227 is a deficient number, since it is larger than the sum of its proper divisors (1).

16686227 is an equidigital number, since it uses as much as digits as its factorization.

16686227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 16686227 is about 4084.8778439508. The cubic root of 16686227 is about 255.5363668502.

The spelling of 16686227 in words is "sixteen million, six hundred eighty-six thousand, two hundred twenty-seven".