263745 has 12 divisors (see below), whose sum is σ = 457236. Its totient is φ = 140640.

The previous prime is 263737. The next prime is 263759. The reversal of 263745 is 547362.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106929 + 156816 = 327^2 + 396^2 .

It is not a de Polignac number, because 263745 - 2³ = 263737 is a prime.

It is a super-2 number, since 2×263745² = 139122850050, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹³ + 6³ + 7² + 3¹¹ + 4² + 5⁷ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2886 + ... + 2975.

It is an arithmetic number, because the mean of its divisors is an integer number (38103).

2²⁶³⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

263745 is a deficient number, since it is larger than the sum of its proper divisors (193491).

263745 is a wasteful number, since it uses less digits than its factorization.

263745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872 (or 5869 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 263745 is about 513.5610966574. The cubic root of 263745 is about 64.1300253691.

The spelling of 263745 in words is "two hundred sixty-three thousand, seven hundred forty-five".