8666249 has 4 divisors (see below), whose sum is σ = 8795664. Its totient is φ = 8536836.

The previous prime is 8666237. The next prime is 8666269. The reversal of 8666249 is 9426668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8666249 - 2¹² = 8662153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8666219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64607 + ... + 64740.

It is an arithmetic number, because the mean of its divisors is an integer number (2198916).

Almost surely, 2^8666249 is an apocalyptic number.

It is an amenable number.

8666249 is a deficient number, since it is larger than the sum of its proper divisors (129415).

8666249 is a wasteful number, since it uses less digits than its factorization.

8666249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129414.

The product of its digits is 124416, while the sum is 41.

The square root of 8666249 is about 2943.8493507651. The cubic root of 8666249 is about 205.4047051767.

The spelling of 8666249 in words is "eight million, six hundred sixty-six thousand, two hundred forty-nine".