263996 has 12 divisors (see below), whose sum is σ = 477120. Its totient is φ = 127680.

The previous prime is 263983. The next prime is 264007. The reversal of 263996 is 699362.

It is a congruent number.

It is an unprimeable number.

263996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941 + ... + 1188.

It is an arithmetic number, because the mean of its divisors is an integer number (39760).

2²⁶³⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

263996 is a deficient number, since it is larger than the sum of its proper divisors (213124).

263996 is a wasteful number, since it uses less digits than its factorization.

263996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164 (or 2162 counting only the distinct ones).

The product of its digits is 17496, while the sum is 35.

The square root of 263996 is about 513.8054106371. The cubic root of 263996 is about 64.1503626049.

The spelling of 263996 in words is "two hundred sixty-three thousand, nine hundred ninety-six".