11663893 has 2 divisors, whose sum is σ = 11663894. Its totient is φ = 11663892.

The previous prime is 11663863. The next prime is 11663909. The reversal of 11663893 is 39836611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11410884 + 253009 = 3378^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 11663893 - 2¹³ = 11655701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11663863) 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 as a sum of consecutive naturals, namely, 5831946 + 5831947.

It is an arithmetic number, because the mean of its divisors is an integer number (5831947).

Almost surely, 2^11663893 is an apocalyptic number.

It is an amenable number.

11663893 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663893 is an equidigital number, since it uses as much as digits as its factorization.

11663893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 11663893 is about 3415.2442079594. The cubic root of 11663893 is about 226.7850955039.

It can be divided in two parts, 116 and 63893, that added together give a square (64009 = 253²).

The spelling of 11663893 in words is "eleven million, six hundred sixty-three thousand, eight hundred ninety-three".