349686 has 12 divisors (see below), whose sum is σ = 757692. Its totient is φ = 116556.

The previous prime is 349667. The next prime is 349697. The reversal of 349686 is 686943.

It is a d-powerful number, because it can be written as 3¹⁰ + 4⁶ + 6² + 9⁴ + 8 + 6⁷ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 349686.

It is a congruent number.

It is an unprimeable number.

349686 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 5 ways as a sum of consecutive naturals, for example, 9696 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (63141).

2³⁴⁹⁶⁸⁶ is an apocalyptic number.

349686 is an abundant number, since it is smaller than the sum of its proper divisors (408006).

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

349686 is a wasteful number, since it uses less digits than its factorization.

349686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19435 (or 19432 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 349686 is about 591.3425403267. The cubic root of 349686 is about 70.4519062361.

It can be divided in two parts, 349 and 686, that added together give a triangular number (1035 = T₄₅).

The spelling of 349686 in words is "three hundred forty-nine thousand, six hundred eighty-six".