8666544 has 40 divisors (see below), whose sum is σ = 22712832. Its totient is φ = 2847040.

The previous prime is 8666543. The next prime is 8666591. The reversal of 8666544 is 4456668.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (8666543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137 + ... + 4679.

Almost surely, 2^8666544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8666544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11356416).

8666544 is an abundant number, since it is smaller than the sum of its proper divisors (14046288).

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

8666544 is a wasteful number, since it uses less digits than its factorization.

8666544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625 (or 2619 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 8666544 is about 2943.8994548048. The cubic root of 8666544 is about 205.4070358160.

The spelling of 8666544 in words is "eight million, six hundred sixty-six thousand, five hundred forty-four".