346689 has 12 divisors (see below), whose sum is σ = 572416. Its totient is φ = 198072.

The previous prime is 346669. The next prime is 346699. The reversal of 346689 is 986643.

It is not a de Polignac number, because 346689 - 2⁵ = 346657 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (346639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2689 + ... + 2814.

2³⁴⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

346689 is a deficient number, since it is larger than the sum of its proper divisors (225727).

346689 is a wasteful number, since it uses less digits than its factorization.

346689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516 (or 5513 counting only the distinct ones).

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

The square root of 346689 is about 588.8030230901. The cubic root of 346689 is about 70.2500580455.

It can be divided in two parts, 346 and 689, that added together give a triangular number (1035 = T₄₅).

The spelling of 346689 in words is "three hundred forty-six thousand, six hundred eighty-nine".