263369 has 2 divisors, whose sum is σ = 263370. Its totient is φ = 263368.

The previous prime is 263323. The next prime is 263383. The reversal of 263369 is 963362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262144 + 1225 = 512^2 + 35^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263369 is a prime.

It is a super-2 number, since 2×263369² = 138726460322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (263399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131684 + 131685.

It is an arithmetic number, because the mean of its divisors is an integer number (131685).

2²⁶³³⁶⁹ is an apocalyptic number.

It is an amenable number.

263369 is a deficient number, since it is larger than the sum of its proper divisors (1).

263369 is an equidigital number, since it uses as much as digits as its factorization.

263369 is an evil number, because the sum of its binary digits is even.

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

The square root of 263369 is about 513.1948947525. The cubic root of 263369 is about 64.0995358720.

The spelling of 263369 in words is "two hundred sixty-three thousand, three hundred sixty-nine".