12800617 has 4 divisors (see below), whose sum is σ = 12817476. Its totient is φ = 12783760.

The previous prime is 12800611. The next prime is 12800621. The reversal of 12800617 is 71600821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2277081 + 10523536 = 1509^2 + 3244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12800617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12800591 and 12800600.

It is not an unprimeable number, because it can be changed into a prime (12800611) 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, 7234 + ... + 8827.

It is an arithmetic number, because the mean of its divisors is an integer number (3204369).

Almost surely, 2^12800617 is an apocalyptic number.

It is an amenable number.

12800617 is a deficient number, since it is larger than the sum of its proper divisors (16859).

12800617 is an equidigital number, since it uses as much as digits as its factorization.

12800617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16858.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 12800617 is about 3577.7949913320. The cubic root of 12800617 is about 233.9251775778.

The spelling of 12800617 in words is "twelve million, eight hundred thousand, six hundred seventeen".