345206 has 4 divisors (see below), whose sum is σ = 517812. Its totient is φ = 172602.

The previous prime is 345193. The next prime is 345221. The reversal of 345206 is 602543.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86300 + ... + 86303.

It is an arithmetic number, because the mean of its divisors is an integer number (129453).

2³⁴⁵²⁰⁶ is an apocalyptic number.

345206 is a deficient number, since it is larger than the sum of its proper divisors (172606).

345206 is a wasteful number, since it uses less digits than its factorization.

345206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172605.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 345206 is about 587.5423388999. The cubic root of 345206 is about 70.1497474516.

Adding to 345206 its reverse (602543), we get a palindrome (947749).

The spelling of 345206 in words is "three hundred forty-five thousand, two hundred six".