263263 has 16 divisors (see below), whose sum is σ = 354816. Its totient is φ = 188640.

The previous prime is 263257. The next prime is 263267. The reversal of 263263 is 362362.

It is a cyclic number.

It is not a de Polignac number, because 263263 - 2¹³ = 255071 is a prime.

263263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 870 + ... + 1132.

It is an arithmetic number, because the mean of its divisors is an integer number (22176).

2²⁶³²⁶³ is an apocalyptic number.

263263 is a deficient number, since it is larger than the sum of its proper divisors (91553).

263263 is a wasteful number, since it uses less digits than its factorization.

263263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294.

The product of its digits is 1296, while the sum is 22.

The square root of 263263 is about 513.0916097540. The cubic root of 263263 is about 64.0909351856.

Subtracting 263263 from its reverse (362362), we obtain a palindrome (99099).

The spelling of 263263 in words is "two hundred sixty-three thousand, two hundred sixty-three".