16109066 has 4 divisors (see below), whose sum is σ = 24163602. Its totient is φ = 8054532.

The previous prime is 16109059. The next prime is 16109077. The reversal of 16109066 is 66090161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66090161 = 83 ⋅796267.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 7958041 = 2855^2 + 2821^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4027265 + ... + 4027268.

Almost surely, 2^16109066 is an apocalyptic number.

16109066 is a deficient number, since it is larger than the sum of its proper divisors (8054536).

16109066 is an equidigital number, since it uses as much as digits as its factorization.

16109066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054535.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 16109066 is about 4013.6100956620. The cubic root of 16109066 is about 252.5554745283. Note that the first 3 decimals are identical.

The spelling of 16109066 in words is "sixteen million, one hundred nine thousand, sixty-six".