240865 has 8 divisors (see below), whose sum is σ = 293760. Its totient is φ = 189552.

The previous prime is 240859. The next prime is 240869. The reversal of 240865 is 568042.

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

It is a cyclic number.

It is not a de Polignac number, because 240865 - 2⁹ = 240353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25 + ... + 694.

It is an arithmetic number, because the mean of its divisors is an integer number (36720).

2²⁴⁰⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

240865 is a deficient number, since it is larger than the sum of its proper divisors (52895).

240865 is an equidigital number, since it uses as much as digits as its factorization.

240865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 240865 is about 490.7799914422. The cubic root of 240865 is about 62.2192204948.

It can be divided in two parts, 2408 and 65, that multiplied together give a triangular number (156520 = T₅₅₉).

The spelling of 240865 in words is "two hundred forty thousand, eight hundred sixty-five".