9966841 has 8 divisors (see below), whose sum is σ = 10529024. Its totient is φ = 9419760.

The previous prime is 9966829. The next prime is 9966857. The reversal of 9966841 is 1486699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9966841 - 2⁹ = 9966329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9966871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2406 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (1316128).

Almost surely, 2^9966841 is an apocalyptic number.

It is an amenable number.

9966841 is a deficient number, since it is larger than the sum of its proper divisors (562183).

9966841 is a wasteful number, since it uses less digits than its factorization.

9966841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7551.

The product of its digits is 93312, while the sum is 43.

The square root of 9966841 is about 3157.0304084693. The cubic root of 9966841 is about 215.2050756462.

The spelling of 9966841 in words is "nine million, nine hundred sixty-six thousand, eight hundred forty-one".