11666417 has 8 divisors (see below), whose sum is σ = 13385856. Its totient is φ = 9960192.

The previous prime is 11666407. The next prime is 11666419. The reversal of 11666417 is 71466611.

It is a happy number.

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 11666417 - 2⁶ = 11666353 is a prime.

It is a super-2 number, since 2×11666417² = 272210571235778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11666419) 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, 1328 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (1673232).

Almost surely, 2^11666417 is an apocalyptic number.

It is an amenable number.

11666417 is a deficient number, since it is larger than the sum of its proper divisors (1719439).

11666417 is an equidigital number, since it uses as much as digits as its factorization.

11666417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6607.

The product of its digits is 6048, while the sum is 32.

The square root of 11666417 is about 3415.6137076666. The cubic root of 11666417 is about 226.8014526583.

The spelling of 11666417 in words is "eleven million, six hundred sixty-six thousand, four hundred seventeen".