13289664 has 56 divisors (see below), whose sum is σ = 37023040. Its totient is φ = 4195584.

The previous prime is 13289663. The next prime is 13289671. The reversal of 13289664 is 46698231.

It is not an unprimeable number, because it can be changed into a prime (13289663) 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, 1827 + ... + 5469.

Almost surely, 2^13289664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13289664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18511520).

13289664 is an abundant number, since it is smaller than the sum of its proper divisors (23733376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13289664 is a wasteful number, since it uses less digits than its factorization.

13289664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677 (or 3667 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 13289664 is about 3645.4991427787. The cubic root of 13289664 is about 236.8670585587.

The spelling of 13289664 in words is "thirteen million, two hundred eighty-nine thousand, six hundred sixty-four".