345560 has 32 divisors (see below), whose sum is σ = 797040. Its totient is φ = 134784.

The previous prime is 345551. The next prime is 345571. The reversal of 345560 is 65543.

345560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

345560 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 7 ways as a sum of consecutive naturals, for example, 2039 + ... + 2201.

2³⁴⁵⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398520).

345560 is an abundant number, since it is smaller than the sum of its proper divisors (451480).

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

345560 is a wasteful number, since it uses less digits than its factorization.

345560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 345560 is about 587.8435165926. The cubic root of 345560 is about 70.1737181888.

The spelling of 345560 in words is "three hundred forty-five thousand, five hundred sixty".