345269 has 4 divisors (see below), whose sum is σ = 346560. Its totient is φ = 343980.

The previous prime is 345263. The next prime is 345271. The reversal of 345269 is 962543.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345269 is a prime.

It is a super-2 number, since 2×345269² = 238421364722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁷ + 4⁹ + 2¹¹ + 5⁷ + 6² + 9³ .

It is a Duffinian number.

It is a plaindrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345263) 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, 77 + ... + 834.

It is an arithmetic number, because the mean of its divisors is an integer number (86640).

2³⁴⁵²⁶⁹ is an apocalyptic number.

It is an amenable number.

345269 is a deficient number, since it is larger than the sum of its proper divisors (1291).

345269 is an equidigital number, since it uses as much as digits as its factorization.

345269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290.

The product of its digits is 6480, while the sum is 29.

The square root of 345269 is about 587.5959496116. The cubic root of 345269 is about 70.1540146286.

The spelling of 345269 in words is "three hundred forty-five thousand, two hundred sixty-nine".