340609 has 4 divisors (see below), whose sum is σ = 347904. Its totient is φ = 333316.

The previous prime is 340601. The next prime is 340619. The reversal of 340609 is 906043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340609 - 2³ = 340601 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 340609.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340609.

It is not an unprimeable number, because it can be changed into a prime (340601) 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 3 ways as a sum of consecutive naturals, for example, 3577 + ... + 3670.

It is an arithmetic number, because the mean of its divisors is an integer number (86976).

2³⁴⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

340609 is a deficient number, since it is larger than the sum of its proper divisors (7295).

340609 is an equidigital number, since it uses as much as digits as its factorization.

340609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 340609 is about 583.6171690415. The cubic root of 340609 is about 69.8369675252.

It can be divided in two parts, 340 and 609, that added together give a palindrome (949).

The spelling of 340609 in words is "three hundred forty thousand, six hundred nine".