206006273 has 4 divisors (see below), whose sum is σ = 224734128. Its totient is φ = 187278420.

The previous prime is 206006261. The next prime is 206006279. The reversal of 206006273 is 372600602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206006273 - 2⁴ = 206006257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206006279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9363911 + ... + 9363932.

It is an arithmetic number, because the mean of its divisors is an integer number (56183532).

Almost surely, 2^206006273 is an apocalyptic number.

It is an amenable number.

206006273 is a deficient number, since it is larger than the sum of its proper divisors (18727855).

206006273 is a wasteful number, since it uses less digits than its factorization.

206006273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18727854.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 206006273 is about 14352.9186230536. The cubic root of 206006273 is about 590.6000531180.

Adding to 206006273 its reverse (372600602), we get a palindrome (578606875).

The spelling of 206006273 in words is "two hundred six million, six thousand, two hundred seventy-three".