13709663 has 12 divisors (see below), whose sum is σ = 15592920. Its totient is φ = 12030480.

The previous prime is 13709651. The next prime is 13709681. The reversal of 13709663 is 36690731.

It is a de Polignac number, because none of the positive numbers 2^k-13709663 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 (13706663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1556 + ... + 5462.

It is an arithmetic number, because the mean of its divisors is an integer number (1299410).

Almost surely, 2^13709663 is an apocalyptic number.

13709663 is a deficient number, since it is larger than the sum of its proper divisors (1883257).

13709663 is a wasteful number, since it uses less digits than its factorization.

13709663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 13709663 is about 3702.6562087237. The cubic root of 13709663 is about 239.3364949075.

The spelling of 13709663 in words is "thirteen million, seven hundred nine thousand, six hundred sixty-three".