16683305 has 4 divisors (see below), whose sum is σ = 20019972. Its totient is φ = 13346640.

The previous prime is 16683229. The next prime is 16683343. The reversal of 16683305 is 50338661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50338661 = 2789 ⋅18049.

It can be written as a sum of positive squares in 2 ways, for example, as 11723776 + 4959529 = 3424^2 + 2227^2 .

It is not a de Polignac number, because 16683305 - 2⁸ = 16683049 is a prime.

It is a Duffinian 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 in 3 ways as a sum of consecutive naturals, for example, 1668326 + ... + 1668335.

It is an arithmetic number, because the mean of its divisors is an integer number (5004993).

Almost surely, 2^16683305 is an apocalyptic number.

It is an amenable number.

16683305 is a deficient number, since it is larger than the sum of its proper divisors (3336667).

16683305 is an equidigital number, since it uses as much as digits as its factorization.

16683305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336666.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 16683305 is about 4084.5201676574. The cubic root of 16683305 is about 255.5214499399.

The spelling of 16683305 in words is "sixteen million, six hundred eighty-three thousand, three hundred five".