12613997 has 4 divisors (see below), whose sum is σ = 13760736. Its totient is φ = 11467260.

The previous prime is 12613981. The next prime is 12613999. The reversal of 12613997 is 79931621.

It is a happy number.

12613997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 12613997 - 2⁴ = 12613981 is a prime.

It is a super-2 number, since 2×12613997² = 318225840632018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12613997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613999) 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, 573353 + ... + 573374.

It is an arithmetic number, because the mean of its divisors is an integer number (3440184).

Almost surely, 2^12613997 is an apocalyptic number.

It is an amenable number.

12613997 is a deficient number, since it is larger than the sum of its proper divisors (1146739).

12613997 is a wasteful number, since it uses less digits than its factorization.

12613997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146738.

The product of its digits is 20412, while the sum is 38.

The square root of 12613997 is about 3551.6189266305. The cubic root of 12613997 is about 232.7828107449.

The spelling of 12613997 in words is "twelve million, six hundred thirteen thousand, nine hundred ninety-seven".