16669427 has 2 divisors, whose sum is σ = 16669428. Its totient is φ = 16669426.

The previous prime is 16669397. The next prime is 16669453. The reversal of 16669427 is 72496661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16669427 - 2⁶ = 16669363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16669487) 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 as a sum of consecutive naturals, namely, 8334713 + 8334714.

It is an arithmetic number, because the mean of its divisors is an integer number (8334714).

Almost surely, 2^16669427 is an apocalyptic number.

16669427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16669427 is an equidigital number, since it uses as much as digits as its factorization.

16669427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 16669427 is about 4082.8209610513. The cubic root of 16669427 is about 255.4505784825.

The spelling of 16669427 in words is "sixteen million, six hundred sixty-nine thousand, four hundred twenty-seven".