13365685 has 4 divisors (see below), whose sum is σ = 16038828. Its totient is φ = 10692544.

The previous prime is 13365673. The next prime is 13365697. The reversal of 13365685 is 58656331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58656331 = 179 ⋅327689.

It is an interprime number because it is at equal distance from previous prime (13365673) and next prime (13365697).

It can be written as a sum of positive squares in 2 ways, for example, as 1920996 + 11444689 = 1386^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 13365685 - 2¹³ = 13357493 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1336564 + ... + 1336573.

It is an arithmetic number, because the mean of its divisors is an integer number (4009707).

Almost surely, 2^13365685 is an apocalyptic number.

It is an amenable number.

13365685 is a deficient number, since it is larger than the sum of its proper divisors (2673143).

13365685 is an equidigital number, since it uses as much as digits as its factorization.

13365685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673142.

The product of its digits is 64800, while the sum is 37.

The square root of 13365685 is about 3655.9109671872. The cubic root of 13365685 is about 237.3178511043.

It can be divided in two parts, 1336 and 5685, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 13365685 in words is "thirteen million, three hundred sixty-five thousand, six hundred eighty-five".