9866606 has 4 divisors (see below), whose sum is σ = 14799912. Its totient is φ = 4933302.

The previous prime is 9866599. The next prime is 9866611. The reversal of 9866606 is 6066689.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6066689 = 463 ⋅13103.

It is a congruent 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 as a sum of consecutive naturals, namely, 2466650 + ... + 2466653.

It is an arithmetic number, because the mean of its divisors is an integer number (3699978).

Almost surely, 2^9866606 is an apocalyptic number.

9866606 is a deficient number, since it is larger than the sum of its proper divisors (4933306).

9866606 is a wasteful number, since it uses less digits than its factorization.

9866606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4933305.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 9866606 is about 3141.1154069852. The cubic root of 9866606 is about 214.4812154027.

The spelling of 9866606 in words is "nine million, eight hundred sixty-six thousand, six hundred six".