11687873 has 4 divisors (see below), whose sum is σ = 11959728. Its totient is φ = 11416020.

The previous prime is 11687861. The next prime is 11687903. The reversal of 11687873 is 37878611.

11687873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37878611 = 29 ⋅1306159.

It is a cyclic number.

It is not a de Polignac number, because 11687873 - 2¹⁰ = 11686849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11687873.

It is not an unprimeable number, because it can be changed into a prime (11687803) 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, 135863 + ... + 135948.

It is an arithmetic number, because the mean of its divisors is an integer number (2989932).

Almost surely, 2^11687873 is an apocalyptic number.

It is an amenable number.

11687873 is a deficient number, since it is larger than the sum of its proper divisors (271855).

11687873 is an equidigital number, since it uses as much as digits as its factorization.

11687873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271854.

The product of its digits is 56448, while the sum is 41.

The square root of 11687873 is about 3418.7531352819. The cubic root of 11687873 is about 226.9404062547.

The spelling of 11687873 in words is "eleven million, six hundred eighty-seven thousand, eight hundred seventy-three".