16605673 has 4 divisors (see below), whose sum is σ = 18977920. Its totient is φ = 14233428.

The previous prime is 16605653. The next prime is 16605679. The reversal of 16605673 is 37650661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16605673 - 2⁹ = 16605161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16605679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186113 + ... + 1186126.

It is an arithmetic number, because the mean of its divisors is an integer number (4744480).

Almost surely, 2^16605673 is an apocalyptic number.

It is an amenable number.

16605673 is a deficient number, since it is larger than the sum of its proper divisors (2372247).

16605673 is an equidigital number, since it uses as much as digits as its factorization.

16605673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372246.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 16605673 is about 4075.0058895663. The cubic root of 16605673 is about 255.1244964299.

The spelling of 16605673 in words is "sixteen million, six hundred five thousand, six hundred seventy-three".