12800017 has 2 divisors, whose sum is σ = 12800018. Its totient is φ = 12800016.

The previous prime is 12800009. The next prime is 12800041. The reversal of 12800017 is 71000821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8288641 + 4511376 = 2879^2 + 2124^2 .

It is a cyclic number.

It is not a de Polignac number, because 12800017 - 2³ = 12800009 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12799967 and 12800003.

It is not a weakly prime, because it can be changed into another prime (12800087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6400008 + 6400009.

It is an arithmetic number, because the mean of its divisors is an integer number (6400009).

Almost surely, 2^12800017 is an apocalyptic number.

It is an amenable number.

12800017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12800017 is an equidigital number, since it uses as much as digits as its factorization.

12800017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 12800017 is about 3577.7111398211. The cubic root of 12800017 is about 233.9215226159.

Adding to 12800017 its reverse (71000821), we get a palindrome (83800838).

The spelling of 12800017 in words is "twelve million, eight hundred thousand, seventeen".