11688791 has 4 divisors (see below), whose sum is σ = 11809392. Its totient is φ = 11568192.

The previous prime is 11688751. The next prime is 11688793. The reversal of 11688791 is 19788611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19788611 = 83 ⋅238417.

It is a cyclic number.

It is not a de Polignac number, because 11688791 - 2⁶ = 11688727 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 (11688793) 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, 60155 + ... + 60348.

It is an arithmetic number, because the mean of its divisors is an integer number (2952348).

Almost surely, 2^11688791 is an apocalyptic number.

11688791 is a deficient number, since it is larger than the sum of its proper divisors (120601).

11688791 is an equidigital number, since it uses as much as digits as its factorization.

11688791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120600.

The product of its digits is 24192, while the sum is 41.

The square root of 11688791 is about 3418.8873921204. The cubic root of 11688791 is about 226.9463476220.

The spelling of 11688791 in words is "eleven million, six hundred eighty-eight thousand, seven hundred ninety-one".