200906 has 16 divisors (see below), whose sum is σ = 336960. Its totient is φ = 89280.

The previous prime is 200903. The next prime is 200909. The reversal of 200906 is 609002.

200906 = 9² + 10² + ... + 84².

It is an interprime number because it is at equal distance from previous prime (200903) and next prime (200909).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (200903) 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 7 ways as a sum of consecutive naturals, for example, 491 + ... + 801.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2²⁰⁰⁹⁰⁶ is an apocalyptic number.

200906 is a deficient number, since it is larger than the sum of its proper divisors (136054).

200906 is a wasteful number, since it uses less digits than its factorization.

200906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 200906 is about 448.2253897316. The cubic root of 200906 is about 58.5685270935.

Adding to 200906 its reverse (609002), we get a palindrome (809908).

The spelling of 200906 in words is "two hundred thousand, nine hundred six".