343686 has 32 divisors (see below), whose sum is σ = 806400. Its totient is φ = 97608.

The previous prime is 343667. The next prime is 343687. The reversal of 343686 is 686343.

It is a congruent number.

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

343686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1975 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (25200).

2³⁴³⁶⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403200).

343686 is an abundant number, since it is smaller than the sum of its proper divisors (462714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343686 is a wasteful number, since it uses less digits than its factorization.

343686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 179 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 343686 is about 586.2473880539. The cubic root of 343686 is about 70.0466355901.

The spelling of 343686 in words is "three hundred forty-three thousand, six hundred eighty-six".