248785 has 4 divisors (see below), whose sum is σ = 298548. Its totient is φ = 199024.

The previous prime is 248783. The next prime is 248789. The reversal of 248785 is 587842.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33489 + 215296 = 183^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 248785 - 2¹ = 248783 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 248785.

It is not an unprimeable number, because it can be changed into a prime (248783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24874 + ... + 24883.

It is an arithmetic number, because the mean of its divisors is an integer number (74637).

248785 is a Friedman number, since it can be written as (8+8/2)^5-47, using all its digits and the basic arithmetic operations.

2²⁴⁸⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

248785 is a deficient number, since it is larger than the sum of its proper divisors (49763).

248785 is an equidigital number, since it uses as much as digits as its factorization.

248785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49762.

The product of its digits is 17920, while the sum is 34.

The square root of 248785 is about 498.7835201768. The cubic root of 248785 is about 62.8938331150.

The spelling of 248785 in words is "two hundred forty-eight thousand, seven hundred eighty-five".