12613809 has 16 divisors (see below), whose sum is σ = 18192384. Its totient is φ = 7728000.

The previous prime is 12613721. The next prime is 12613823. The reversal of 12613809 is 90831621.

It is not a de Polignac number, because 12613809 - 2⁸ = 12613553 is a prime.

It is a super-3 number, since 3×12613809³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12613829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10384 + ... + 11534.

It is an arithmetic number, because the mean of its divisors is an integer number (1137024).

Almost surely, 2^12613809 is an apocalyptic number.

It is an amenable number.

12613809 is a deficient number, since it is larger than the sum of its proper divisors (5578575).

12613809 is a wasteful number, since it uses less digits than its factorization.

12613809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12613809 is about 3551.5924597285. The cubic root of 12613809 is about 232.7816542681.

The spelling of 12613809 in words is "twelve million, six hundred thirteen thousand, eight hundred nine".