260423717 has 2 divisors, whose sum is σ = 260423718. Its totient is φ = 260423716.

The previous prime is 260423651. The next prime is 260423719. The reversal of 260423717 is 717324062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258116356 + 2307361 = 16066^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 260423717 - 2⁸ = 260423461 is a prime.

Together with 260423719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260423719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130211858 + 130211859.

It is an arithmetic number, because the mean of its divisors is an integer number (130211859).

Almost surely, 2^260423717 is an apocalyptic number.

It is an amenable number.

260423717 is a deficient number, since it is larger than the sum of its proper divisors (1).

260423717 is an equidigital number, since it uses as much as digits as its factorization.

260423717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 260423717 is about 16137.6490543078. The cubic root of 260423717 is about 638.5969565287.

Adding to 260423717 its reverse (717324062), we get a palindrome (977747779).

The spelling of 260423717 in words is "two hundred sixty million, four hundred twenty-three thousand, seven hundred seventeen".