13106665 has 32 divisors (see below), whose sum is σ = 19305216. Its totient is φ = 8405760.

The previous prime is 13106663. The next prime is 13106689. The reversal of 13106665 is 56660131.

It is not a de Polignac number, because 13106665 - 2¹ = 13106663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13106663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16047 + ... + 16843.

It is an arithmetic number, because the mean of its divisors is an integer number (603288).

Almost surely, 2^13106665 is an apocalyptic number.

It is an amenable number.

13106665 is a deficient number, since it is larger than the sum of its proper divisors (6198551).

13106665 is a wasteful number, since it uses less digits than its factorization.

13106665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 13106665 is about 3620.3128317868. The cubic root of 13106665 is about 235.7748079318.

Adding to 13106665 its reverse (56660131), we get a palindrome (69766796).

It can be divided in two parts, 131066 and 65, that added together give a palindrome (131131).

The spelling of 13106665 in words is "thirteen million, one hundred six thousand, six hundred sixty-five".