260718287 has 2 divisors, whose sum is σ = 260718288. Its totient is φ = 260718286.

The previous prime is 260718257. The next prime is 260718301. The reversal of 260718287 is 782817062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260718287 - 2⁶ = 260718223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260718257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130359143 + 130359144.

It is an arithmetic number, because the mean of its divisors is an integer number (130359144).

Almost surely, 2^260718287 is an apocalyptic number.

260718287 is a deficient number, since it is larger than the sum of its proper divisors (1).

260718287 is an equidigital number, since it uses as much as digits as its factorization.

260718287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 260718287 is about 16146.7732689847. The cubic root of 260718287 is about 638.8376420120.

The spelling of 260718287 in words is "two hundred sixty million, seven hundred eighteen thousand, two hundred eighty-seven".