263087 has 4 divisors (see below), whose sum is σ = 287016. Its totient is φ = 239160.

The previous prime is 263083. The next prime is 263089. The reversal of 263087 is 780362.

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

It is a cyclic number.

It is not a de Polignac number, because 263087 - 2² = 263083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11948 + ... + 11969.

It is an arithmetic number, because the mean of its divisors is an integer number (71754).

2²⁶³⁰⁸⁷ is an apocalyptic number.

263087 is a deficient number, since it is larger than the sum of its proper divisors (23929).

263087 is a wasteful number, since it uses less digits than its factorization.

263087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23928.

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

The square root of 263087 is about 512.9200717461. The cubic root of 263087 is about 64.0766497002.

It can be divided in two parts, 26 and 3087, that added together give a palindrome (3113).

The spelling of 263087 in words is "two hundred sixty-three thousand, eighty-seven".