263597 has 2 divisors, whose sum is σ = 263598. Its totient is φ = 263596.

The previous prime is 263591. The next prime is 263609. The reversal of 263597 is 795362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212521 + 51076 = 461^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 263597 - 2⁶ = 263533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131798 + 131799.

It is an arithmetic number, because the mean of its divisors is an integer number (131799).

2²⁶³⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

263597 is a deficient number, since it is larger than the sum of its proper divisors (1).

263597 is an equidigital number, since it uses as much as digits as its factorization.

263597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 32.

The square root of 263597 is about 513.4169845262. The cubic root of 263597 is about 64.1180276445.

The spelling of 263597 in words is "two hundred sixty-three thousand, five hundred ninety-seven".