13685837 has 4 divisors (see below), whose sum is σ = 14930016. Its totient is φ = 12441660.

The previous prime is 13685809. The next prime is 13685869. The reversal of 13685837 is 73858631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13685837 - 2⁶ = 13685773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13685794 and 13685803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13685887) by changing a digit.

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, 622073 + ... + 622094.

It is an arithmetic number, because the mean of its divisors is an integer number (3732504).

Almost surely, 2^13685837 is an apocalyptic number.

It is an amenable number.

13685837 is a deficient number, since it is larger than the sum of its proper divisors (1244179).

13685837 is a wasteful number, since it uses less digits than its factorization.

13685837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244178.

The product of its digits is 120960, while the sum is 41.

The square root of 13685837 is about 3699.4373896581. The cubic root of 13685837 is about 239.1977670157.

The spelling of 13685837 in words is "thirteen million, six hundred eighty-five thousand, eight hundred thirty-seven".