263995 has 8 divisors (see below), whose sum is σ = 325584. Its totient is φ = 205344.

The previous prime is 263983. The next prime is 264007. The reversal of 263995 is 599362.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (263983) and next prime (264007).

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

It is a cyclic number.

It is not a de Polignac number, because 263995 - 2⁷ = 263867 is a prime.

It is a Duffinian number.

263995 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 263995.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529 + ... + 898.

It is an arithmetic number, because the mean of its divisors is an integer number (40698).

2²⁶³⁹⁹⁵ is an apocalyptic number.

263995 is a deficient number, since it is larger than the sum of its proper divisors (61589).

263995 is a wasteful number, since it uses less digits than its factorization.

263995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469.

The product of its digits is 14580, while the sum is 34.

The square root of 263995 is about 513.8044375052. The cubic root of 263995 is about 64.1502816057.

The spelling of 263995 in words is "two hundred sixty-three thousand, nine hundred ninety-five".