11666393 has 2 divisors, whose sum is σ = 11666394. Its totient is φ = 11666392.

The previous prime is 11666383. The next prime is 11666407. The reversal of 11666393 is 39366611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11641744 + 24649 = 3412^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 11666393 - 2⁶ = 11666329 is a prime.

It is a super-2 number, since 2×11666393² = 272209451260898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11666353) 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 as a sum of consecutive naturals, namely, 5833196 + 5833197.

It is an arithmetic number, because the mean of its divisors is an integer number (5833197).

Almost surely, 2^11666393 is an apocalyptic number.

It is an amenable number.

11666393 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666393 is an equidigital number, since it uses as much as digits as its factorization.

11666393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 35.

The square root of 11666393 is about 3415.6101943869. The cubic root of 11666393 is about 226.8012971339.

The spelling of 11666393 in words is "eleven million, six hundred sixty-six thousand, three hundred ninety-three".