345369 has 4 divisors (see below), whose sum is σ = 460496. Its totient is φ = 230244.

The previous prime is 345329. The next prime is 345379. The reversal of 345369 is 963543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 345369 - 2⁹ = 344857 is a prime.

It is a super-2 number, since 2×345369² = 238559492322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345369.

It is not an unprimeable number, because it can be changed into a prime (345329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57559 + ... + 57564.

It is an arithmetic number, because the mean of its divisors is an integer number (115124).

2³⁴⁵³⁶⁹ is an apocalyptic number.

It is an amenable number.

345369 is a deficient number, since it is larger than the sum of its proper divisors (115127).

345369 is a wasteful number, since it uses less digits than its factorization.

345369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115126.

The product of its digits is 9720, while the sum is 30.

The square root of 345369 is about 587.6810359370. The cubic root of 345369 is about 70.1607868596.

The spelling of 345369 in words is "three hundred forty-five thousand, three hundred sixty-nine".