11663143 has 2 divisors, whose sum is σ = 11663144. Its totient is φ = 11663142.

The previous prime is 11663117. The next prime is 11663167. The reversal of 11663143 is 34136611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11663143 - 2⁹ = 11662631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11663543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831571 + 5831572.

It is an arithmetic number, because the mean of its divisors is an integer number (5831572).

Almost surely, 2^11663143 is an apocalyptic number.

11663143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663143 is an equidigital number, since it uses as much as digits as its factorization.

11663143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 11663143 is about 3415.1344043829. The cubic root of 11663143 is about 226.7802345635.

Adding to 11663143 its reverse (34136611), we get a palindrome (45799754).

The spelling of 11663143 in words is "eleven million, six hundred sixty-three thousand, one hundred forty-three".