340855 has 4 divisors (see below), whose sum is σ = 409032. Its totient is φ = 272680.

The previous prime is 340849. The next prime is 340859. The reversal of 340855 is 558043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558043 = 67 ⋅8329.

It is a de Polignac number, because none of the positive numbers 2^k-340855 is a prime.

It is a Duffinian number.

340855 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340859) 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, 34081 + ... + 34090.

It is an arithmetic number, because the mean of its divisors is an integer number (102258).

2³⁴⁰⁸⁵⁵ is an apocalyptic number.

340855 is a deficient number, since it is larger than the sum of its proper divisors (68177).

340855 is an equidigital number, since it uses as much as digits as its factorization.

340855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68176.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 340855 is about 583.8278855964. The cubic root of 340855 is about 69.8537763976.

Adding to 340855 its reverse (558043), we get a palindrome (898898).

The spelling of 340855 in words is "three hundred forty thousand, eight hundred fifty-five".