206345345 has 8 divisors (see below), whose sum is σ = 249806376. Its totient is φ = 163614976.

The previous prime is 206345311. The next prime is 206345389. The reversal of 206345345 is 543543602.

It can be written as a sum of positive squares in 4 ways, for example, as 18079504 + 188265841 = 4252^2 + 13721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206345345 - 2⁶ = 206345281 is a prime.

It is a Duffinian 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, 182042 + ... + 183171.

It is an arithmetic number, because the mean of its divisors is an integer number (31225797).

Almost surely, 2^206345345 is an apocalyptic number.

It is an amenable number.

206345345 is a deficient number, since it is larger than the sum of its proper divisors (43461031).

206345345 is a wasteful number, since it uses less digits than its factorization.

206345345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365331.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 206345345 is about 14364.7257196231. The cubic root of 206345345 is about 590.9239043767.

Adding to 206345345 its reverse (543543602), we get a palindrome (749888947).

The spelling of 206345345 in words is "two hundred six million, three hundred forty-five thousand, three hundred forty-five".