11680013 has 4 divisors (see below), whose sum is σ = 11789280. Its totient is φ = 11570748.

The previous prime is 11679991. The next prime is 11680027. The reversal of 11680013 is 31008611.

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 an emirpimes, since its reverse is a distinct semiprime: 31008611 = 71 ⋅436741.

It is a cyclic number.

It is not a de Polignac number, because 11680013 - 2⁸ = 11679757 is a prime.

It is a super-4 number, since 4×11680013⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11680033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54473 + ... + 54686.

It is an arithmetic number, because the mean of its divisors is an integer number (2947320).

Almost surely, 2^11680013 is an apocalyptic number.

It is an amenable number.

11680013 is a deficient number, since it is larger than the sum of its proper divisors (109267).

11680013 is a wasteful number, since it uses less digits than its factorization.

11680013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109266.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 11680013 is about 3417.6034000451. The cubic root of 11680013 is about 226.8895229846.

Adding to 11680013 its reverse (31008611), we get a palindrome (42688624).

The spelling of 11680013 in words is "eleven million, six hundred eighty thousand, thirteen".