343689 has 16 divisors (see below), whose sum is σ = 508032. Its totient is φ = 205568.

The previous prime is 343687. The next prime is 343709. The reversal of 343689 is 986343.

It is a cyclic number.

It is not a de Polignac number, because 343689 - 2¹ = 343687 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343689.

It is not an unprimeable number, because it can be changed into a prime (343687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2³⁴³⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

343689 is a deficient number, since it is larger than the sum of its proper divisors (164343).

343689 is a wasteful number, since it uses less digits than its factorization.

343689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its digits is 15552, while the sum is 33.

The square root of 343689 is about 586.2499466951. The cubic root of 343689 is about 70.0468393995.

The spelling of 343689 in words is "three hundred forty-three thousand, six hundred eighty-nine".