13569685 has 4 divisors (see below), whose sum is σ = 16283628. Its totient is φ = 10855744.

The previous prime is 13569683. The next prime is 13569691. The reversal of 13569685 is 58696531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58696531 = 7027 ⋅8353.

It can be written as a sum of positive squares in 2 ways, for example, as 2692881 + 10876804 = 1641^2 + 3298^2 .

It is a cyclic number.

It is not a de Polignac number, because 13569685 - 2¹ = 13569683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13569683) 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, 1356964 + ... + 1356973.

It is an arithmetic number, because the mean of its divisors is an integer number (4070907).

Almost surely, 2^13569685 is an apocalyptic number.

It is an amenable number.

13569685 is a deficient number, since it is larger than the sum of its proper divisors (2713943).

13569685 is an equidigital number, since it uses as much as digits as its factorization.

13569685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713942.

The product of its digits is 194400, while the sum is 43.

The square root of 13569685 is about 3683.7053356641. The cubic root of 13569685 is about 238.5191513320.

The spelling of 13569685 in words is "thirteen million, five hundred sixty-nine thousand, six hundred eighty-five".