13289666 has 16 divisors (see below), whose sum is σ = 21969024. Its totient is φ = 5990544.

The previous prime is 13289663. The next prime is 13289671. The reversal of 13289666 is 66698231.

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, 4826 + ... + 7061.

It is an arithmetic number, because the mean of its divisors is an integer number (1373064).

Almost surely, 2^13289666 is an apocalyptic number.

13289666 is a deficient number, since it is larger than the sum of its proper divisors (8679358).

13289666 is a wasteful number, since it uses less digits than its factorization.

13289666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11945.

The product of its digits is 93312, while the sum is 41.

The square root of 13289666 is about 3645.4994170895. The cubic root of 13289666 is about 236.8670704409.

It can be divided in two parts, 132 and 89666, that added together give a palindrome (89798).

The spelling of 13289666 in words is "thirteen million, two hundred eighty-nine thousand, six hundred sixty-six".