8209663 has 8 divisors (see below), whose sum is σ = 10235520. Its totient is φ = 6397080.

The previous prime is 8209633. The next prime is 8209681. The reversal of 8209663 is 3669028.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8209663 - 2⁹ = 8209151 is a prime.

It is a Duffinian number.

8209663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8209633) 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, 53233 + ... + 53386.

It is an arithmetic number, because the mean of its divisors is an integer number (1279440).

Almost surely, 2^8209663 is an apocalyptic number.

8209663 is a deficient number, since it is larger than the sum of its proper divisors (2025857).

8209663 is a wasteful number, since it uses less digits than its factorization.

8209663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106637.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 8209663 is about 2865.2509488699. The cubic root of 8209663 is about 201.7321466973.

The spelling of 8209663 in words is "eight million, two hundred nine thousand, six hundred sixty-three".