263704 has 32 divisors (see below), whose sum is σ = 600480. Its totient is φ = 105984.

The previous prime is 263677. The next prime is 263723. The reversal of 263704 is 407362.

It is a congruent number.

It is an unprimeable number.

263704 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814 + ... + 1090.

It is an arithmetic number, because the mean of its divisors is an integer number (18765).

2²⁶³⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300240).

263704 is an abundant number, since it is smaller than the sum of its proper divisors (336776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263704 is a wasteful number, since it uses less digits than its factorization.

263704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 263704 is about 513.5211777522. The cubic root of 263704 is about 64.1267021247.

The spelling of 263704 in words is "two hundred sixty-three thousand, seven hundred four".