11813685 has 32 divisors (see below), whose sum is σ = 20805120. Its totient is φ = 5687808.

The previous prime is 11813677. The next prime is 11813707. The reversal of 11813685 is 58631811.

It is not a de Polignac number, because 11813685 - 2³ = 11813677 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 8521 + ... + 9809.

It is an arithmetic number, because the mean of its divisors is an integer number (650160).

Almost surely, 2^11813685 is an apocalyptic number.

11813685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11813685 is a deficient number, since it is larger than the sum of its proper divisors (8991435).

11813685 is a wasteful number, since it uses less digits than its factorization.

11813685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357.

The product of its digits is 5760, while the sum is 33.

The square root of 11813685 is about 3437.1041590269. The cubic root of 11813685 is about 227.7517882084.

The spelling of 11813685 in words is "eleven million, eight hundred thirteen thousand, six hundred eighty-five".