263396 has 24 divisors (see below), whose sum is σ = 551040. Its totient is φ = 107712.

The previous prime is 263387. The next prime is 263399. The reversal of 263396 is 693362.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (263399) 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, 440 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (22960).

2²⁶³³⁹⁶ 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 263396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275520).

263396 is an abundant number, since it is smaller than the sum of its proper divisors (287644).

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

263396 is a wasteful number, since it uses less digits than its factorization.

263396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 441 counting only the distinct ones).

The product of its digits is 5832, while the sum is 29.

The square root of 263396 is about 513.2211998739. The cubic root of 263396 is about 64.1017262441.

The spelling of 263396 in words is "two hundred sixty-three thousand, three hundred ninety-six".