260787 has 4 divisors (see below), whose sum is σ = 347720. Its totient is φ = 173856.

The previous prime is 260773. The next prime is 260791. The reversal of 260787 is 787062.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 260787 - 2⁶ = 260723 is a prime.

It is a D-number.

It is a Duffinian number.

260787 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43462 + ... + 43467.

It is an arithmetic number, because the mean of its divisors is an integer number (86930).

2²⁶⁰⁷⁸⁷ is an apocalyptic number.

260787 is a deficient number, since it is larger than the sum of its proper divisors (86933).

260787 is an equidigital number, since it uses as much as digits as its factorization.

260787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86932.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 260787 is about 510.6730852512. The cubic root of 260787 is about 63.8893759537.

The spelling of 260787 in words is "two hundred sixty thousand, seven hundred eighty-seven".