248565 has 16 divisors (see below), whose sum is σ = 404928. Its totient is φ = 130176.

The previous prime is 248543. The next prime is 248569. The reversal of 248565 is 565842.

It is not a de Polignac number, because 248565 - 2⁵ = 248533 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 982 + ... + 1208.

It is an arithmetic number, because the mean of its divisors is an integer number (25308).

2²⁴⁸⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

248565 is a deficient number, since it is larger than the sum of its proper divisors (156363).

248565 is a wasteful number, since it uses less digits than its factorization.

248565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308.

The product of its digits is 9600, while the sum is 30.

The square root of 248565 is about 498.5629348437. The cubic root of 248565 is about 62.8752886906.

The spelling of 248565 in words is "two hundred forty-eight thousand, five hundred sixty-five".