340545 has 16 divisors (see below), whose sum is σ = 554112. Its totient is φ = 178560.

The previous prime is 340541. The next prime is 340559. The reversal of 340545 is 545043.

It is a happy number.

It is not a de Polignac number, because 340545 - 2² = 340541 is a prime.

It is a Curzon number.

It is a zygodrome in base 6.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340545.

It is not an unprimeable number, because it can be changed into a prime (340541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940 + ... + 1250.

It is an arithmetic number, because the mean of its divisors is an integer number (34632).

2³⁴⁰⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

340545 is a deficient number, since it is larger than the sum of its proper divisors (213567).

340545 is a wasteful number, since it uses less digits than its factorization.

340545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 340545 is about 583.5623360019. The cubic root of 340545 is about 69.8325931586.

Adding to 340545 its reverse (545043), we get a palindrome (885588).

The spelling of 340545 in words is "three hundred forty thousand, five hundred forty-five".