13804685 has 4 divisors (see below), whose sum is σ = 16565628. Its totient is φ = 11043744.

The previous prime is 13804673. The next prime is 13804691. The reversal of 13804685 is 58640831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58640831 = 79 ⋅742289.

It can be written as a sum of positive squares in 2 ways, for example, as 3378244 + 10426441 = 1838^2 + 3229^2 .

It is a cyclic number.

It is not a de Polignac number, because 13804685 - 2⁸ = 13804429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380464 + ... + 1380473.

It is an arithmetic number, because the mean of its divisors is an integer number (4141407).

Almost surely, 2^13804685 is an apocalyptic number.

It is an amenable number.

13804685 is a deficient number, since it is larger than the sum of its proper divisors (2760943).

13804685 is an equidigital number, since it uses as much as digits as its factorization.

13804685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760942.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 13804685 is about 3715.4656504939. The cubic root of 13804685 is about 239.8881712808. Note that the first 3 decimals are identical.

The spelling of 13804685 in words is "thirteen million, eight hundred four thousand, six hundred eighty-five".