12247617 has 4 divisors (see below), whose sum is σ = 16330160. Its totient is φ = 8165076.

The previous prime is 12247603. The next prime is 12247619. The reversal of 12247617 is 71674221.

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: 71674221 = 3 ⋅23891407.

It is not a de Polignac number, because 12247617 - 2¹⁵ = 12214849 is a prime.

It is a Duffinian number.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12247619) 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, 2041267 + ... + 2041272.

It is an arithmetic number, because the mean of its divisors is an integer number (4082540).

Almost surely, 2^12247617 is an apocalyptic number.

It is an amenable number.

12247617 is a deficient number, since it is larger than the sum of its proper divisors (4082543).

12247617 is an equidigital number, since it uses as much as digits as its factorization.

12247617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082542.

The product of its digits is 4704, while the sum is 30.

The square root of 12247617 is about 3499.6595548710. The cubic root of 12247617 is about 230.5068657836.

The spelling of 12247617 in words is "twelve million, two hundred forty-seven thousand, six hundred seventeen".