12616013 has 4 divisors (see below), whose sum is σ = 12666528. Its totient is φ = 12565500.

The previous prime is 12616007. The next prime is 12616027. The reversal of 12616013 is 31061621.

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: 31061621 = 109 ⋅284969.

It is a cyclic number.

It is not a de Polignac number, because 12616013 - 2⁴ = 12615997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12016013) 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, 24881 + ... + 25382.

It is an arithmetic number, because the mean of its divisors is an integer number (3166632).

Almost surely, 2^12616013 is an apocalyptic number.

It is an amenable number.

12616013 is a deficient number, since it is larger than the sum of its proper divisors (50515).

12616013 is an equidigital number, since it uses as much as digits as its factorization.

12616013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50514.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12616013 is about 3551.9027295240. The cubic root of 12616013 is about 232.7952113913.

Adding to 12616013 its reverse (31061621), we get a palindrome (43677634).

The spelling of 12616013 in words is "twelve million, six hundred sixteen thousand, thirteen".