11786855 has 4 divisors (see below), whose sum is σ = 14144232. Its totient is φ = 9429480.

The previous prime is 11786839. The next prime is 11786857. The reversal of 11786855 is 55868711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55868711 = 83 ⋅673117.

It is not a de Polignac number, because 11786855 - 2⁴ = 11786839 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 (11786857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178681 + ... + 1178690.

It is an arithmetic number, because the mean of its divisors is an integer number (3536058).

Almost surely, 2^11786855 is an apocalyptic number.

11786855 is a deficient number, since it is larger than the sum of its proper divisors (2357377).

11786855 is an equidigital number, since it uses as much as digits as its factorization.

11786855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357376.

The product of its digits is 67200, while the sum is 41.

The square root of 11786855 is about 3433.1989455900. The cubic root of 11786855 is about 227.5792422098.

The spelling of 11786855 in words is "eleven million, seven hundred eighty-six thousand, eight hundred fifty-five".