11665013 has 2 divisors, whose sum is σ = 11665014. Its totient is φ = 11665012.

The previous prime is 11665007. The next prime is 11665037. The reversal of 11665013 is 31056611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9375844 + 2289169 = 3062^2 + 1513^2 .

It is an emirp because it is prime and its reverse (31056611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11665013 - 2¹² = 11660917 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 11665013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11665063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832506 + 5832507.

It is an arithmetic number, because the mean of its divisors is an integer number (5832507).

Almost surely, 2^11665013 is an apocalyptic number.

It is an amenable number.

11665013 is a deficient number, since it is larger than the sum of its proper divisors (1).

11665013 is an equidigital number, since it uses as much as digits as its factorization.

11665013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 11665013 is about 3415.4081747282. The cubic root of 11665013 is about 226.7923541204.

The spelling of 11665013 in words is "eleven million, six hundred sixty-five thousand, thirteen".