11685217 has 4 divisors (see below), whose sum is σ = 11788740. Its totient is φ = 11581696.

The previous prime is 11685211. The next prime is 11685227. The reversal of 11685217 is 71258611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2143296 + 9541921 = 1464^2 + 3089^2 .

It is a cyclic number.

It is not a de Polignac number, because 11685217 - 2¹¹ = 11683169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11685211) 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 3 ways as a sum of consecutive naturals, for example, 51592 + ... + 51817.

It is an arithmetic number, because the mean of its divisors is an integer number (2947185).

Almost surely, 2^11685217 is an apocalyptic number.

It is an amenable number.

11685217 is a deficient number, since it is larger than the sum of its proper divisors (103523).

11685217 is a wasteful number, since it uses less digits than its factorization.

11685217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103522.

The product of its digits is 3360, while the sum is 31.

The square root of 11685217 is about 3418.3646674982. The cubic root of 11685217 is about 226.9232146641.

The spelling of 11685217 in words is "eleven million, six hundred eighty-five thousand, two hundred seventeen".