12983617 has 4 divisors (see below), whose sum is σ = 12992980. Its totient is φ = 12974256.

The previous prime is 12983611. The next prime is 12983623. The reversal of 12983617 is 71638921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 71638921 = 59 ⋅1214219.

It is an interprime number because it is at equal distance from previous prime (12983611) and next prime (12983623).

It can be written as a sum of positive squares in 2 ways, for example, as 9235521 + 3748096 = 3039^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 12983617 - 2⁷ = 12983489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12983611) 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, 2142 + ... + 5527.

It is an arithmetic number, because the mean of its divisors is an integer number (3248245).

Almost surely, 2^12983617 is an apocalyptic number.

It is an amenable number.

12983617 is a deficient number, since it is larger than the sum of its proper divisors (9363).

12983617 is an equidigital number, since it uses as much as digits as its factorization.

12983617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362.

The product of its digits is 18144, while the sum is 37.

The square root of 12983617 is about 3603.2786459001. The cubic root of 12983617 is about 235.0346531062.

The spelling of 12983617 in words is "twelve million, nine hundred eighty-three thousand, six hundred seventeen".