345340 has 24 divisors (see below), whose sum is σ = 749952. Its totient is φ = 133440.

The previous prime is 345329. The next prime is 345379. The reversal of 345340 is 43543.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a congruent 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, 342 + ... + 898.

It is an arithmetic number, because the mean of its divisors is an integer number (31248).

2³⁴⁵³⁴⁰ 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 345340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374976).

345340 is an abundant number, since it is smaller than the sum of its proper divisors (404612).

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

345340 is a wasteful number, since it uses less digits than its factorization.

345340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 345340 is about 587.6563621710. The cubic root of 345340 is about 70.1588230472.

Adding to 345340 its reverse (43543), we get a palindrome (388883).

The spelling of 345340 in words is "three hundred forty-five thousand, three hundred forty".