8663345 has 4 divisors (see below), whose sum is σ = 10396020. Its totient is φ = 6930672.

The previous prime is 8663311. The next prime is 8663357. The reversal of 8663345 is 5433668.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4096576 + 4566769 = 2024^2 + 2137^2 .

It is a cyclic number.

It is not a de Polignac number, because 8663345 - 2⁸ = 8663089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866330 + ... + 866339.

It is an arithmetic number, because the mean of its divisors is an integer number (2599005).

Almost surely, 2^8663345 is an apocalyptic number.

It is an amenable number.

8663345 is a deficient number, since it is larger than the sum of its proper divisors (1732675).

8663345 is a wasteful number, since it uses less digits than its factorization.

8663345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732674.

The product of its digits is 51840, while the sum is 35.

The square root of 8663345 is about 2943.3560776773. The cubic root of 8663345 is about 205.3817593823.

The spelling of 8663345 in words is "eight million, six hundred sixty-three thousand, three hundred forty-five".