206440873 has 8 divisors (see below), whose sum is σ = 217635840. Its totient is φ = 195529440.

The previous prime is 206440853. The next prime is 206440889. The reversal of 206440873 is 378044602.

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

It is a cyclic number.

It is not a de Polignac number, because 206440873 - 2⁹ = 206440361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206440853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69388 + ... + 72301.

It is an arithmetic number, because the mean of its divisors is an integer number (27204480).

Almost surely, 2^206440873 is an apocalyptic number.

It is an amenable number.

206440873 is a deficient number, since it is larger than the sum of its proper divisors (11194967).

206440873 is a wasteful number, since it uses less digits than its factorization.

206440873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141767.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 206440873 is about 14368.0504244661. The cubic root of 206440873 is about 591.0150801187.

The spelling of 206440873 in words is "two hundred six million, four hundred forty thousand, eight hundred seventy-three".