200643355 has 16 divisors (see below), whose sum is σ = 262950624. Its totient is φ = 145761280.

The previous prime is 200643353. The next prime is 200643361. The reversal of 200643355 is 553346002.

It is not a de Polignac number, because 200643355 - 2¹ = 200643353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200643353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74187 + ... + 76843.

It is an arithmetic number, because the mean of its divisors is an integer number (16434414).

Almost surely, 2^200643355 is an apocalyptic number.

200643355 is a deficient number, since it is larger than the sum of its proper divisors (62307269).

200643355 is a wasteful number, since it uses less digits than its factorization.

200643355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 200643355 is about 14164.8633950349. The cubic root of 200643355 is about 585.4299369481.

Adding to 200643355 its reverse (553346002), we get a palindrome (753989357).

The spelling of 200643355 in words is "two hundred million, six hundred forty-three thousand, three hundred fifty-five".