340865 has 8 divisors (see below), whose sum is σ = 467520. Its totient is φ = 233712.

The previous prime is 340859. The next prime is 340877. The reversal of 340865 is 568043.

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 340865 - 2⁴ = 340849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4835 + ... + 4904.

It is an arithmetic number, because the mean of its divisors is an integer number (58440).

2³⁴⁰⁸⁶⁵ is an apocalyptic number.

340865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

340865 is a deficient number, since it is larger than the sum of its proper divisors (126655).

340865 is an equidigital number, since it uses as much as digits as its factorization.

340865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9751.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 340865 is about 583.8364497015. The cubic root of 340865 is about 69.8544595140.

The spelling of 340865 in words is "three hundred forty thousand, eight hundred sixty-five".