340655 has 8 divisors (see below), whose sum is σ = 467232. Its totient is φ = 233568.

The previous prime is 340649. The next prime is 340657. The reversal of 340655 is 556043.

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 340655 - 2⁶ = 340591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340655.

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 340655.

It is not an unprimeable number, because it can be changed into a prime (340657) 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, 4832 + ... + 4901.

It is an arithmetic number, because the mean of its divisors is an integer number (58404).

2³⁴⁰⁶⁵⁵ is an apocalyptic number.

340655 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

340655 is a deficient number, since it is larger than the sum of its proper divisors (126577).

340655 is an equidigital number, since it uses as much as digits as its factorization.

340655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9745.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 340655 is about 583.6565771068. The cubic root of 340655 is about 69.8401112627.

Adding to 340655 its reverse (556043), we get a palindrome (896698).

The spelling of 340655 in words is "three hundred forty thousand, six hundred fifty-five".