11662217 has 8 divisors (see below), whose sum is σ = 13497600. Its totient is φ = 9869184.

The previous prime is 11662201. The next prime is 11662223. The reversal of 11662217 is 71226611.

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

It is a cyclic number.

It is not a de Polignac number, because 11662217 - 2⁴ = 11662201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11662267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9992 + ... + 11097.

It is an arithmetic number, because the mean of its divisors is an integer number (1687200).

Almost surely, 2^11662217 is an apocalyptic number.

It is an amenable number.

11662217 is a deficient number, since it is larger than the sum of its proper divisors (1835383).

11662217 is an equidigital number, since it uses as much as digits as its factorization.

11662217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21175.

The product of its digits is 1008, while the sum is 26.

The square root of 11662217 is about 3414.9988286967. The cubic root of 11662217 is about 226.7742326348.

Adding to 11662217 its reverse (71226611), we get a palindrome (82888828).

The spelling of 11662217 in words is "eleven million, six hundred sixty-two thousand, two hundred seventeen".