345345 has 64 divisors (see below), whose sum is σ = 774144. Its totient is φ = 126720.

The previous prime is 345329. The next prime is 345379. The reversal of 345345 is 543543.

It is a happy number.

It is not a de Polignac number, because 345345 - 2⁴ = 345329 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15004 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (12096).

2³⁴⁵³⁴⁵ is an apocalyptic number.

345345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

345345 is an abundant number, since it is smaller than the sum of its proper divisors (428799).

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

345345 is a wasteful number, since it uses less digits than its factorization.

345345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62.

The product of its digits is 3600, while the sum is 24.

The square root of 345345 is about 587.6606163425. The cubic root of 345345 is about 70.1591616434.

Adding to 345345 its reverse (543543), we get a palindrome (888888).

The spelling of 345345 in words is "three hundred forty-five thousand, three hundred forty-five".