263887 has 8 divisors (see below), whose sum is σ = 290304. Its totient is φ = 238368.

The previous prime is 263881. The next prime is 263899. The reversal of 263887 is 788362.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 263887 - 2⁷ = 263759 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 (263881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498 + ... + 880.

It is an arithmetic number, because the mean of its divisors is an integer number (36288).

2²⁶³⁸⁸⁷ is an apocalyptic number.

263887 is a deficient number, since it is larger than the sum of its proper divisors (26417).

263887 is a wasteful number, since it uses less digits than its factorization.

263887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449.

The product of its digits is 16128, while the sum is 34.

The square root of 263887 is about 513.6993284014. The cubic root of 263887 is about 64.1415324811.

The spelling of 263887 in words is "two hundred sixty-three thousand, eight hundred eighty-seven".