12870017 has 2 divisors, whose sum is σ = 12870018. Its totient is φ = 12870016.

The previous prime is 12870007. The next prime is 12870031. The reversal of 12870017 is 71007821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10995856 + 1874161 = 3316^2 + 1369^2 .

It is an emirp because it is prime and its reverse (71007821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12870017 - 2⁴ = 12870001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12870007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435008 + 6435009.

It is an arithmetic number, because the mean of its divisors is an integer number (6435009).

Almost surely, 2^12870017 is an apocalyptic number.

It is an amenable number.

12870017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12870017 is an equidigital number, since it uses as much as digits as its factorization.

12870017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 12870017 is about 3587.4805922820. The cubic root of 12870017 is about 234.3471665199.

Adding to 12870017 its reverse (71007821), we get a palindrome (83877838).

The spelling of 12870017 in words is "twelve million, eight hundred seventy thousand, seventeen".