9872717 has 2 divisors, whose sum is σ = 9872718. Its totient is φ = 9872716.

The previous prime is 9872713. The next prime is 9872729. The reversal of 9872717 is 7172789.

9872717 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8649481 + 1223236 = 2941^2 + 1106^2 .

It is a cyclic number.

It is not a de Polignac number, because 9872717 - 2² = 9872713 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9872711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4936358 + 4936359.

It is an arithmetic number, because the mean of its divisors is an integer number (4936359).

Almost surely, 2^9872717 is an apocalyptic number.

It is an amenable number.

9872717 is a deficient number, since it is larger than the sum of its proper divisors (1).

9872717 is an equidigital number, since it uses as much as digits as its factorization.

9872717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 41.

The square root of 9872717 is about 3142.0880000407. The cubic root of 9872717 is about 214.5254867628.

The spelling of 9872717 in words is "nine million, eight hundred seventy-two thousand, seven hundred seventeen".