343690 has 8 divisors (see below), whose sum is σ = 618660. Its totient is φ = 137472.

The previous prime is 343687. The next prime is 343709. The reversal of 343690 is 96343.

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 22201 = 567^2 + 149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×343690² = 236245632200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343690.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17175 + ... + 17194.

2³⁴³⁶⁹⁰ is an apocalyptic number.

343690 is a deficient number, since it is larger than the sum of its proper divisors (274970).

343690 is a wasteful number, since it uses less digits than its factorization.

343690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34376.

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

The square root of 343690 is about 586.2507995730. The cubic root of 343690 is about 70.0469073357.

The spelling of 343690 in words is "three hundred forty-three thousand, six hundred ninety".