263290 has 16 divisors (see below), whose sum is σ = 480168. Its totient is φ = 103936.

The previous prime is 263287. The next prime is 263293. The reversal of 263290 is 92362.

263290 is nontrivially palindromic in base 9.

It is an interprime number because it is at equal distance from previous prime (263287) and next prime (263293).

It can be written as a sum of positive squares in 4 ways, for example, as 89401 + 173889 = 299^2 + 417^2 .

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (263293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1014 + ... + 1246.

2²⁶³²⁹⁰ is an apocalyptic number.

263290 is a deficient number, since it is larger than the sum of its proper divisors (216878).

263290 is a wasteful number, since it uses less digits than its factorization.

263290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 263290 is about 513.1179201704. The cubic root of 263290 is about 64.0931261455.

The spelling of 263290 in words is "two hundred sixty-three thousand, two hundred ninety".