13288666 has 8 divisors (see below), whose sum is σ = 19948500. Its totient is φ = 6639168.

The previous prime is 13288631. The next prime is 13288673. The reversal of 13288666 is 66688231.

13288666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13169641 + 119025 = 3629^2 + 345^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3460 + ... + 6208.

Almost surely, 2^13288666 is an apocalyptic number.

13288666 is a deficient number, since it is larger than the sum of its proper divisors (6659834).

13288666 is a wasteful number, since it uses less digits than its factorization.

13288666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168.

The product of its digits is 82944, while the sum is 40.

The square root of 13288666 is about 3645.3622590903. The cubic root of 13288666 is about 236.8611291576.

The spelling of 13288666 in words is "thirteen million, two hundred eighty-eight thousand, six hundred sixty-six".