263495 has 8 divisors (see below), whose sum is σ = 319200. Its totient is φ = 208800.

The previous prime is 263491. The next prime is 263503. The reversal of 263495 is 594362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 263495 - 2² = 263491 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 6 + 4² + 3¹¹ + 9 + 5⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263491) 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, 581 + ... + 929.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2²⁶³⁴⁹⁵ is an apocalyptic number.

263495 is a deficient number, since it is larger than the sum of its proper divisors (55705).

263495 is a wasteful number, since it uses less digits than its factorization.

263495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505.

The product of its digits is 6480, while the sum is 29.

The square root of 263495 is about 513.3176404528. The cubic root of 263495 is about 64.1097563281.

The spelling of 263495 in words is "two hundred sixty-three thousand, four hundred ninety-five".