248705 has 4 divisors (see below), whose sum is σ = 298452. Its totient is φ = 198960.

The previous prime is 248701. The next prime is 248707. The reversal of 248705 is 507842.

248705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 169744 + 78961 = 412^2 + 281^2 .

It is not a de Polignac number, because 248705 - 2² = 248701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (248701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24866 + ... + 24875.

It is an arithmetic number, because the mean of its divisors is an integer number (74613).

2²⁴⁸⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

248705 is a deficient number, since it is larger than the sum of its proper divisors (49747).

248705 is an equidigital number, since it uses as much as digits as its factorization.

248705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49746.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 248705 is about 498.7033186174. The cubic root of 248705 is about 62.8870909534.

The spelling of 248705 in words is "two hundred forty-eight thousand, seven hundred five".