343705 has 8 divisors (see below), whose sum is σ = 420552. Its totient is φ = 269568.

The previous prime is 343687. The next prime is 343709. The reversal of 343705 is 507343.

It can be written as a sum of positive squares in 4 ways, for example, as 177241 + 166464 = 421^2 + 408^2 .

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 343705 - 2⁹ = 343193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343709) 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, 384 + ... + 913.

It is an arithmetic number, because the mean of its divisors is an integer number (52569).

2³⁴³⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

343705 is a deficient number, since it is larger than the sum of its proper divisors (76847).

343705 is a wasteful number, since it uses less digits than its factorization.

343705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 343705 is about 586.2635925930. The cubic root of 343705 is about 70.0479263628.

The spelling of 343705 in words is "three hundred forty-three thousand, seven hundred five".