263269 has 2 divisors, whose sum is σ = 263270. Its totient is φ = 263268.

The previous prime is 263267. The next prime is 263273. The reversal of 263269 is 962362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263169 + 100 = 513^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 263269 - 2¹ = 263267 is a prime.

It is a super-2 number, since 2×263269² = 138621132722, which contains 22 as substring.

Together with 263267, it forms a pair of twin primes.

263269 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131634 + 131635.

It is an arithmetic number, because the mean of its divisors is an integer number (131635).

2²⁶³²⁶⁹ is an apocalyptic number.

It is an amenable number.

263269 is a deficient number, since it is larger than the sum of its proper divisors (1).

263269 is an equidigital number, since it uses as much as digits as its factorization.

263269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 263269 is about 513.0974566298. The cubic root of 263269 is about 64.0914220785.

It can be divided in two parts, 26326 and 9, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 263269 in words is "two hundred sixty-three thousand, two hundred sixty-nine".