345505 has 8 divisors (see below), whose sum is σ = 424512. Its totient is φ = 269808.

The previous prime is 345487. The next prime is 345511. The reversal of 345505 is 505543.

It is a happy number.

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 345505 - 2⁵ = 345473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589 + ... + 1018.

It is an arithmetic number, because the mean of its divisors is an integer number (53064).

2³⁴⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

345505 is a deficient number, since it is larger than the sum of its proper divisors (79007).

345505 is a wasteful number, since it uses less digits than its factorization.

345505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 345505 is about 587.7967335738. The cubic root of 345505 is about 70.1699949962.

The spelling of 345505 in words is "three hundred forty-five thousand, five hundred five".