340845 has 16 divisors (see below), whose sum is σ = 563712. Its totient is φ = 175680.

The previous prime is 340819. The next prime is 340849. The reversal of 340845 is 548043.

It is a happy number.

It is not a de Polignac number, because 340845 - 2¹⁰ = 339821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340849) 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 15 ways as a sum of consecutive naturals, for example, 99 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (35232).

2³⁴⁰⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

340845 is a deficient number, since it is larger than the sum of its proper divisors (222867).

340845 is a wasteful number, since it uses less digits than its factorization.

340845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 340845 is about 583.8193213658. The cubic root of 340845 is about 69.8530932678.

Adding to 340845 its reverse (548043), we get a palindrome (888888).

The spelling of 340845 in words is "three hundred forty thousand, eight hundred forty-five".