200845 has 4 divisors (see below), whose sum is σ = 241020. Its totient is φ = 160672.

The previous prime is 200843. The next prime is 200861. The reversal of 200845 is 548002.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 149769 + 51076 = 387^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 200845 - 2¹ = 200843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20080 + ... + 20089.

It is an arithmetic number, because the mean of its divisors is an integer number (60255).

2²⁰⁰⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

200845 is a deficient number, since it is larger than the sum of its proper divisors (40175).

200845 is an equidigital number, since it uses as much as digits as its factorization.

200845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40174.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 200845 is about 448.1573384427. The cubic root of 200845 is about 58.5625988786.

Adding to 200845 its reverse (548002), we get a palindrome (748847).

The spelling of 200845 in words is "two hundred thousand, eight hundred forty-five".