260716817 has 2 divisors, whose sum is σ = 260716818. Its totient is φ = 260716816.

The previous prime is 260716801. The next prime is 260716829. The reversal of 260716817 is 718617062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235806736 + 24910081 = 15356^2 + 4991^2 .

It is a cyclic number.

It is not a de Polignac number, because 260716817 - 2⁴ = 260716801 is a prime.

It is a super-2 number, since 2×260716817² = 135946517333222978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (260716847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130358408 + 130358409.

It is an arithmetic number, because the mean of its divisors is an integer number (130358409).

Almost surely, 2^260716817 is an apocalyptic number.

It is an amenable number.

260716817 is a deficient number, since it is larger than the sum of its proper divisors (1).

260716817 is an equidigital number, since it uses as much as digits as its factorization.

260716817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 260716817 is about 16146.7277489899. The cubic root of 260716817 is about 638.8364413634.

The spelling of 260716817 in words is "two hundred sixty million, seven hundred sixteen thousand, eight hundred seventeen".