11665003 has 4 divisors (see below), whose sum is σ = 13331440. Its totient is φ = 9998568.

The previous prime is 11665001. The next prime is 11665007. The reversal of 11665003 is 30056611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11665003 - 2¹ = 11665001 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (11665001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833208 + ... + 833221.

It is an arithmetic number, because the mean of its divisors is an integer number (3332860).

Almost surely, 2^11665003 is an apocalyptic number.

11665003 is a deficient number, since it is larger than the sum of its proper divisors (1666437).

11665003 is an equidigital number, since it uses as much as digits as its factorization.

11665003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666436.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 11665003 is about 3415.4067107740. The cubic root of 11665003 is about 226.7922893133.

The spelling of 11665003 in words is "eleven million, six hundred sixty-five thousand, three".