263493 has 10 divisors (see below), whose sum is σ = 393734. Its totient is φ = 175608.

The previous prime is 263491. The next prime is 263503. The reversal of 263493 is 394362.

It can be written as a sum of positive squares in only one way, i.e., 263169 + 324 = 513^2 + 18^2 .

It is not a de Polignac number, because 263493 - 2¹ = 263491 is a prime.

It is a super-2 number, since 2×263493² = 138857122098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2⁵ + 6⁴ + 4⁹ + 3 + 9 + 3² .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 263493.

It is not an unprimeable number, because it can be changed into a prime (263491) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1546 + ... + 1707.

2²⁶³⁴⁹³ is an apocalyptic number.

It is an amenable number.

263493 is a deficient number, since it is larger than the sum of its proper divisors (130241).

263493 is an equidigital number, since it uses as much as digits as its factorization.

263493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265 (or 3256 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 263493 is about 513.3156923376. The cubic root of 263493 is about 64.1095941240.

The spelling of 263493 in words is "two hundred sixty-three thousand, four hundred ninety-three".