16066209 has 8 divisors (see below), whose sum is σ = 21455712. Its totient is φ = 10693760.

The previous prime is 16066199. The next prime is 16066279. The reversal of 16066209 is 90266061.

16066209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16066209 - 2⁷ = 16066081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16066279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872 + ... + 5969.

It is an arithmetic number, because the mean of its divisors is an integer number (2681964).

Almost surely, 2^16066209 is an apocalyptic number.

It is an amenable number.

16066209 is a deficient number, since it is larger than the sum of its proper divisors (5389503).

16066209 is an equidigital number, since it uses as much as digits as its factorization.

16066209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8527.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16066209 is about 4008.2675808883. The cubic root of 16066209 is about 252.3313071184.

The spelling of 16066209 in words is "sixteen million, sixty-six thousand, two hundred nine".