248717 has 4 divisors (see below), whose sum is σ = 284256. Its totient is φ = 213180.

The previous prime is 248707. The next prime is 248719. The reversal of 248717 is 717842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 248717 - 2⁴ = 248701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248719) 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, 17759 + ... + 17772.

It is an arithmetic number, because the mean of its divisors is an integer number (71064).

2²⁴⁸⁷¹⁷ is an apocalyptic number.

It is an amenable number.

248717 is a deficient number, since it is larger than the sum of its proper divisors (35539).

248717 is an equidigital number, since it uses as much as digits as its factorization.

248717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35538.

The product of its digits is 3136, while the sum is 29.

The square root of 248717 is about 498.7153496735. The cubic root of 248717 is about 62.8881023698. Note that the first 3 decimals are identical.

The spelling of 248717 in words is "two hundred forty-eight thousand, seven hundred seventeen".