9966305 has 4 divisors (see below), whose sum is σ = 11959572. Its totient is φ = 7973040.

The previous prime is 9966277. The next prime is 9966323. The reversal of 9966305 is 5036699.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2193361 + 7772944 = 1481^2 + 2788^2 .

It is not a de Polignac number, because 9966305 - 2¹⁶ = 9900769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996626 + ... + 996635.

It is an arithmetic number, because the mean of its divisors is an integer number (2989893).

Almost surely, 2^9966305 is an apocalyptic number.

It is an amenable number.

9966305 is a deficient number, since it is larger than the sum of its proper divisors (1993267).

9966305 is a wasteful number, since it uses less digits than its factorization.

9966305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993266.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 9966305 is about 3156.9455174266. The cubic root of 9966305 is about 215.2012177877.

The spelling of 9966305 in words is "nine million, nine hundred sixty-six thousand, three hundred five".