346643 has 4 divisors (see below), whose sum is σ = 378168. Its totient is φ = 315120.

The previous prime is 346639. The next prime is 346649.

346643 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 346643 - 2² = 346639 is a prime.

It is a super-2 number, since 2×346643² = 240322738898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15746 + ... + 15767.

It is an arithmetic number, because the mean of its divisors is an integer number (94542).

2³⁴⁶⁶⁴³ is an apocalyptic number.

346643 is a deficient number, since it is larger than the sum of its proper divisors (31525).

346643 is a wasteful number, since it uses less digits than its factorization.

346643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31524.

The product of its digits is 5184, while the sum is 26.

The square root of 346643 is about 588.7639594948. The cubic root of 346643 is about 70.2469508941.

It can be divided in two parts, 346 and 643, that added together give a palindrome (989).

The spelling of 346643 in words is "three hundred forty-six thousand, six hundred forty-three".