11658013 has 4 divisors (see below), whose sum is σ = 11665728. Its totient is φ = 11650300.

The previous prime is 11658011. The next prime is 11658019. The reversal of 11658013 is 31085611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31085611 = 907 ⋅34273.

It is a cyclic number.

It is not a de Polignac number, because 11658013 - 2¹ = 11658011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11658011) 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 in 3 ways as a sum of consecutive naturals, for example, 763 + ... + 4888.

It is an arithmetic number, because the mean of its divisors is an integer number (2916432).

Almost surely, 2^11658013 is an apocalyptic number.

It is an amenable number.

11658013 is a deficient number, since it is larger than the sum of its proper divisors (7715).

11658013 is an equidigital number, since it uses as much as digits as its factorization.

11658013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 11658013 is about 3414.3832532392. The cubic root of 11658013 is about 226.7469801421.

The spelling of 11658013 in words is "eleven million, six hundred fifty-eight thousand, thirteen".