8663243 has 4 divisors (see below), whose sum is σ = 8681520. Its totient is φ = 8644968.

The previous prime is 8663209. The next prime is 8663261. The reversal of 8663243 is 3423668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8663243 - 2⁸ = 8662987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8663273) 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, 8408 + ... + 9381.

It is an arithmetic number, because the mean of its divisors is an integer number (2170380).

Almost surely, 2^8663243 is an apocalyptic number.

8663243 is a deficient number, since it is larger than the sum of its proper divisors (18277).

8663243 is a wasteful number, since it uses less digits than its factorization.

8663243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18276.

The product of its digits is 20736, while the sum is 32.

The square root of 8663243 is about 2943.3387504669. The cubic root of 8663243 is about 205.3809533418.

The spelling of 8663243 in words is "eight million, six hundred sixty-three thousand, two hundred forty-three".