13356689 has 4 divisors (see below), whose sum is σ = 13608756. Its totient is φ = 13104624.

The previous prime is 13356683. The next prime is 13356697. The reversal of 13356689 is 98665331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12306064 + 1050625 = 3508^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 13356689 - 2⁸ = 13356433 is a prime.

It is a super-2 number, since 2×13356689² = 356802282085442, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13356683) 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 3 ways as a sum of consecutive naturals, for example, 125954 + ... + 126059.

It is an arithmetic number, because the mean of its divisors is an integer number (3402189).

Almost surely, 2^13356689 is an apocalyptic number.

It is an amenable number.

13356689 is a deficient number, since it is larger than the sum of its proper divisors (252067).

13356689 is an equidigital number, since it uses as much as digits as its factorization.

13356689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252066.

The product of its digits is 116640, while the sum is 41.

The square root of 13356689 is about 3654.6804237854. The cubic root of 13356689 is about 237.2645955586.

The spelling of 13356689 in words is "thirteen million, three hundred fifty-six thousand, six hundred eighty-nine".