206003345 has 8 divisors (see below), whose sum is σ = 247399080. Its totient is φ = 164672640.

The previous prime is 206003333. The next prime is 206003363. The reversal of 206003345 is 543300602.

It can be written as a sum of positive squares in 4 ways, for example, as 21939856 + 184063489 = 4684^2 + 13567^2 .

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

It is not a de Polignac number, because 206003345 - 2¹² = 205999249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206003345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8990 + ... + 22199.

It is an arithmetic number, because the mean of its divisors is an integer number (30924885).

Almost surely, 2^206003345 is an apocalyptic number.

It is an amenable number.

206003345 is a deficient number, since it is larger than the sum of its proper divisors (41395735).

206003345 is a wasteful number, since it uses less digits than its factorization.

206003345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32515.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 206003345 is about 14352.8166225309. The cubic root of 206003345 is about 590.5972550072.

Adding to 206003345 its reverse (543300602), we get a palindrome (749303947).

The spelling of 206003345 in words is "two hundred six million, three thousand, three hundred forty-five".