8388666 has 48 divisors (see below), whose sum is σ = 21359520. Its totient is φ = 2345760.

The previous prime is 8388637. The next prime is 8388673. The reversal of 8388666 is 6668838.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 945 + ... + 4203.

It is an arithmetic number, because the mean of its divisors is an integer number (444990).

Almost surely, 2^8388666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8388666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10679760).

8388666 is an abundant number, since it is smaller than the sum of its proper divisors (12970854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8388666 is a wasteful number, since it uses less digits than its factorization.

8388666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291 (or 3288 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 8388666 is about 2896.3193884653. The cubic root of 8388666 is about 203.1878029393.

The spelling of 8388666 in words is "eight million, three hundred eighty-eight thousand, six hundred sixty-six".