11771217 has 16 divisors (see below), whose sum is σ = 17911680. Its totient is φ = 7634736.

The previous prime is 11771213. The next prime is 11771257. The reversal of 11771217 is 71217711.

It is not a de Polignac number, because 11771217 - 2² = 11771213 is a prime.

It is a super-2 number, since 2×11771217² = 277123099322178, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11771213) 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 15 ways as a sum of consecutive naturals, for example, 4893 + ... + 6890.

It is an arithmetic number, because the mean of its divisors is an integer number (1119480).

Almost surely, 2^11771217 is an apocalyptic number.

It is an amenable number.

11771217 is a deficient number, since it is larger than the sum of its proper divisors (6140463).

11771217 is a wasteful number, since it uses less digits than its factorization.

11771217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11829 (or 11823 counting only the distinct ones).

The product of its digits is 686, while the sum is 27.

The square root of 11771217 is about 3430.9207219054. The cubic root of 11771217 is about 227.4785520979.

Adding to 11771217 its reverse (71217711), we get a palindrome (82988928).

The spelling of 11771217 in words is "eleven million, seven hundred seventy-one thousand, two hundred seventeen".