16066009 has 2 divisors, whose sum is σ = 16066010. Its totient is φ = 16066008.

The previous prime is 16065979. The next prime is 16066019. The reversal of 16066009 is 90066061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15976009 + 90000 = 3997^2 + 300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16066009 is a prime.

It is not a weakly prime, because it can be changed into another prime (16066019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8033004 + 8033005.

It is an arithmetic number, because the mean of its divisors is an integer number (8033005).

Almost surely, 2^16066009 is an apocalyptic number.

It is an amenable number.

16066009 is a deficient number, since it is larger than the sum of its proper divisors (1).

16066009 is an equidigital number, since it uses as much as digits as its factorization.

16066009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 16066009 is about 4008.2426323764. The cubic root of 16066009 is about 252.3302600664.

The spelling of 16066009 in words is "sixteen million, sixty-six thousand, nine".