11665903 has 2 divisors, whose sum is σ = 11665904. Its totient is φ = 11665902.

The previous prime is 11665879. The next prime is 11665931. The reversal of 11665903 is 30956611.

11665903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11665903 - 2⁹ = 11665391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11665963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832951 + 5832952.

It is an arithmetic number, because the mean of its divisors is an integer number (5832952).

Almost surely, 2^11665903 is an apocalyptic number.

11665903 is a deficient number, since it is larger than the sum of its proper divisors (1).

11665903 is an equidigital number, since it uses as much as digits as its factorization.

11665903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 11665903 is about 3415.5384641371. The cubic root of 11665903 is about 226.7981217968.

The spelling of 11665903 in words is "eleven million, six hundred sixty-five thousand, nine hundred three".