260387 has 2 divisors, whose sum is σ = 260388. Its totient is φ = 260386.

The previous prime is 260363. The next prime is 260399. The reversal of 260387 is 783062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260387 - 2¹⁴ = 244003 is a prime.

It is a super-3 number, since 3×260387³ = 52963801433341809, which contains 333 as substring.

It is an Ulam number.

It is a nialpdrome in base 8.

It is not a weakly prime, because it can be changed into another prime (260317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130193 + 130194.

It is an arithmetic number, because the mean of its divisors is an integer number (130194).

2²⁶⁰³⁸⁷ is an apocalyptic number.

260387 is a deficient number, since it is larger than the sum of its proper divisors (1).

260387 is an equidigital number, since it uses as much as digits as its factorization.

260387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 260387 is about 510.2812949737. The cubic root of 260387 is about 63.8566943304.

The spelling of 260387 in words is "two hundred sixty thousand, three hundred eighty-seven".