263804 has 6 divisors (see below), whose sum is σ = 461664. Its totient is φ = 131900.

The previous prime is 263803. The next prime is 263819. The reversal of 263804 is 408362.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 263804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32972 + ... + 32979.

It is an arithmetic number, because the mean of its divisors is an integer number (76944).

2²⁶³⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

263804 is a deficient number, since it is larger than the sum of its proper divisors (197860).

263804 is a wasteful number, since it uses less digits than its factorization.

263804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65955 (or 65953 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 263804 is about 513.6185354911. The cubic root of 263804 is about 64.1348069945.

The spelling of 263804 in words is "two hundred sixty-three thousand, eight hundred four".