8648663 has 4 divisors (see below), whose sum is σ = 8859648. Its totient is φ = 8437680.

The previous prime is 8648557. The next prime is 8648677. The reversal of 8648663 is 3668468.

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 8648663 - 2¹⁴ = 8632279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 210943 = 8648663 / (8 + 6 + 4 + 8 + 6 + 6 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8648663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8648863) 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, 105431 + ... + 105512.

It is an arithmetic number, because the mean of its divisors is an integer number (2214912).

Almost surely, 2^8648663 is an apocalyptic number.

8648663 is a deficient number, since it is larger than the sum of its proper divisors (210985).

8648663 is a wasteful number, since it uses less digits than its factorization.

8648663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210984.

The product of its digits is 165888, while the sum is 41.

The square root of 8648663 is about 2940.8609283677. The cubic root of 8648663 is about 205.2656718114.

The spelling of 8648663 in words is "eight million, six hundred forty-eight thousand, six hundred sixty-three".