13309663 has 8 divisors (see below), whose sum is σ = 14018400. Its totient is φ = 12611808.

The previous prime is 13309649. The next prime is 13309693. The reversal of 13309663 is 36690331.

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 13309663 - 2⁹ = 13309151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13309613) 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, 148 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (1752300).

Almost surely, 2^13309663 is an apocalyptic number.

13309663 is a deficient number, since it is larger than the sum of its proper divisors (708737).

13309663 is a wasteful number, since it uses less digits than its factorization.

13309663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5441.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 13309663 is about 3648.2410830426. The cubic root of 13309663 is about 236.9858157641.

Adding to 13309663 its reverse (36690331), we get a palindrome (49999994).

The spelling of 13309663 in words is "thirteen million, three hundred nine thousand, six hundred sixty-three".