340455 has 8 divisors (see below), whose sum is σ = 544752. Its totient is φ = 181568.

The previous prime is 340453. The next prime is 340477. The reversal of 340455 is 554043.

It is a happy number.

340455 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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 340455 - 2¹ = 340453 is a prime.

340455 is strictly pandigital in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340455.

It is not an unprimeable number, because it can be changed into a prime (340451) 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 7 ways as a sum of consecutive naturals, for example, 11334 + ... + 11363.

It is an arithmetic number, because the mean of its divisors is an integer number (68094).

2³⁴⁰⁴⁵⁵ is an apocalyptic number.

340455 is a deficient number, since it is larger than the sum of its proper divisors (204297).

340455 is a wasteful number, since it uses less digits than its factorization.

340455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22705.

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

The square root of 340455 is about 583.4852183218. The cubic root of 340455 is about 69.8264407782.

Adding to 340455 its reverse (554043), we get a palindrome (894498).

The spelling of 340455 in words is "three hundred forty thousand, four hundred fifty-five".