2116717 has 2 divisors, whose sum is σ = 2116718. Its totient is φ = 2116716.

The previous prime is 2116693. The next prime is 2116729. The reversal of 2116717 is 7176112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2114116 + 2601 = 1454^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116717 - 2¹⁹ = 1592429 is a prime.

2116717 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2116691 and 2116700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058358 + 1058359.

It is an arithmetic number, because the mean of its divisors is an integer number (1058359).

2^2116717 is an apocalyptic number.

It is an amenable number.

2116717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116717 is an equidigital number, since it uses as much as digits as its factorization.

2116717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588, while the sum is 25.

The square root of 2116717 is about 1454.8941542257. The cubic root of 2116717 is about 128.3968194720.

The spelling of 2116717 in words is "two million, one hundred sixteen thousand, seven hundred seventeen".