11817217 has 8 divisors (see below), whose sum is σ = 12161600. Its totient is φ = 11476080.

The previous prime is 11817199. The next prime is 11817229. The reversal of 11817217 is 71271811.

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 11817217 - 2⁷ = 11817089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11817277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7867 + ... + 9247.

It is an arithmetic number, because the mean of its divisors is an integer number (1520200).

Almost surely, 2^11817217 is an apocalyptic number.

It is an amenable number.

11817217 is a deficient number, since it is larger than the sum of its proper divisors (344383).

11817217 is a wasteful number, since it uses less digits than its factorization.

11817217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623.

The product of its digits is 784, while the sum is 28.

The square root of 11817217 is about 3437.6179252500. The cubic root of 11817217 is about 227.7744833331.

The spelling of 11817217 in words is "eleven million, eight hundred seventeen thousand, two hundred seventeen".