343609 has 8 divisors (see below), whose sum is σ = 396288. Its totient is φ = 291840.

The previous prime is 343601. The next prime is 343627. The reversal of 343609 is 906343.

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 343609 - 2³ = 343601 is a prime.

It is a Duffinian number.

343609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (343601) 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, 1209 + ... + 1465.

It is an arithmetic number, because the mean of its divisors is an integer number (49536).

2³⁴³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

343609 is a deficient number, since it is larger than the sum of its proper divisors (52679).

343609 is a wasteful number, since it uses less digits than its factorization.

343609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 343609 is about 586.1817124408. The cubic root of 343609 is about 70.0414040766.

The spelling of 343609 in words is "three hundred forty-three thousand, six hundred nine".