265717 has 2 divisors, whose sum is σ = 265718. Its totient is φ = 265716.

The previous prime is 265711. The next prime is 265729. The reversal of 265717 is 717562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264196 + 1521 = 514^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 265717 - 2³ = 265709 is a prime.

265717 is a lucky number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132858 + 132859.

It is an arithmetic number, because the mean of its divisors is an integer number (132859).

2²⁶⁵⁷¹⁷ is an apocalyptic number.

It is an amenable number.

265717 is a deficient number, since it is larger than the sum of its proper divisors (1).

265717 is an equidigital number, since it uses as much as digits as its factorization.

265717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2940, while the sum is 28.

The square root of 265717 is about 515.4774485853. The cubic root of 265717 is about 64.2894603343.

The spelling of 265717 in words is "two hundred sixty-five thousand, seven hundred seventeen".