9666445 has 4 divisors (see below), whose sum is σ = 11599740. Its totient is φ = 7733152.

The previous prime is 9666427. The next prime is 9666457. The reversal of 9666445 is 5446669.

9666445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5446669 = 31 ⋅175699.

It can be written as a sum of positive squares in 2 ways, for example, as 3143529 + 6522916 = 1773^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 9666445 - 2⁹ = 9665933 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 9666398 and 9666407.

It is a congruent 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, 966640 + ... + 966649.

It is an arithmetic number, because the mean of its divisors is an integer number (2899935).

Almost surely, 2^9666445 is an apocalyptic number.

It is an amenable number.

9666445 is a deficient number, since it is larger than the sum of its proper divisors (1933295).

9666445 is a wasteful number, since it uses less digits than its factorization.

9666445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933294.

The product of its digits is 155520, while the sum is 40.

The square root of 9666445 is about 3109.0907030835. The cubic root of 9666445 is about 213.0209226584.

The spelling of 9666445 in words is "nine million, six hundred sixty-six thousand, four hundred forty-five".