346645 has 8 divisors (see below), whose sum is σ = 448056. Its totient is φ = 255936.

The previous prime is 346639. The next prime is 346649. The reversal of 346645 is 546643.

346645 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 77284 + 269361 = 278^2 + 519^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 346645 - 2⁹ = 346133 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2602 + ... + 2731.

It is an arithmetic number, because the mean of its divisors is an integer number (56007).

2³⁴⁶⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

346645 is a deficient number, since it is larger than the sum of its proper divisors (101411).

346645 is a wasteful number, since it uses less digits than its factorization.

346645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351.

The product of its digits is 8640, while the sum is 28.

The square root of 346645 is about 588.7656579659. The cubic root of 346645 is about 70.2470859934.

The spelling of 346645 in words is "three hundred forty-six thousand, six hundred forty-five".