260857 has 2 divisors, whose sum is σ = 260858. Its totient is φ = 260856.

The previous prime is 260849. The next prime is 260861. The reversal of 260857 is 758062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210681 + 50176 = 459^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 260857 - 2³ = 260849 is a prime.

It is not a weakly prime, because it can be changed into another prime (260807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130428 + 130429.

It is an arithmetic number, because the mean of its divisors is an integer number (130429).

2²⁶⁰⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

260857 is a deficient number, since it is larger than the sum of its proper divisors (1).

260857 is an equidigital number, since it uses as much as digits as its factorization.

260857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 260857 is about 510.7416176503. The cubic root of 260857 is about 63.8950918013.

The spelling of 260857 in words is "two hundred sixty thousand, eight hundred fifty-seven".