11687217 has 8 divisors (see below), whose sum is σ = 16085760. Its totient is φ = 7540080.

The previous prime is 11687191. The next prime is 11687231. The reversal of 11687217 is 71278611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11687217 - 2¹⁰ = 11686193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11687287) 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 7 ways as a sum of consecutive naturals, for example, 62742 + ... + 62927.

It is an arithmetic number, because the mean of its divisors is an integer number (2010720).

Almost surely, 2^11687217 is an apocalyptic number.

It is an amenable number.

11687217 is a deficient number, since it is larger than the sum of its proper divisors (4398543).

11687217 is a wasteful number, since it uses less digits than its factorization.

11687217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125703.

The product of its digits is 4704, while the sum is 33.

The square root of 11687217 is about 3418.6571925246. The cubic root of 11687217 is about 226.9361603812.

It can be divided in two parts, 1168 and 7217, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 11687217 in words is "eleven million, six hundred eighty-seven thousand, two hundred seventeen".