263198 has 16 divisors (see below), whose sum is σ = 435456. Its totient is φ = 118560.

The previous prime is 263191. The next prime is 263201. The reversal of 263198 is 891362.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 263198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263191) by changing a digit.

263198 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 7 ways as a sum of consecutive naturals, for example, 1283 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (27216).

2²⁶³¹⁹⁸ is an apocalyptic number.

263198 is a deficient number, since it is larger than the sum of its proper divisors (172258).

263198 is a wasteful number, since it uses less digits than its factorization.

263198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259.

The product of its digits is 2592, while the sum is 29.

The square root of 263198 is about 513.0282643286. The cubic root of 263198 is about 64.0856600378.

Subtracting from 263198 its sum of digits (29), we obtain a square (263169 = 513²).

The spelling of 263198 in words is "two hundred sixty-three thousand, one hundred ninety-eight".