206855089 has 8 divisors (see below), whose sum is σ = 236500160. Its totient is φ = 177233616.

The previous prime is 206855081. The next prime is 206855107. The reversal of 206855089 is 980558602.

206855089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 206855089 - 2³ = 206855081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206855081) 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, 21202 + ... + 29380.

It is an arithmetic number, because the mean of its divisors is an integer number (29562520).

Almost surely, 2^206855089 is an apocalyptic number.

It is an amenable number.

206855089 is a deficient number, since it is larger than the sum of its proper divisors (29645071).

206855089 is an equidigital number, since it uses as much as digits as its factorization.

206855089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11799.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 206855089 is about 14382.4576828858. The cubic root of 206855089 is about 591.4100993615.

The spelling of 206855089 in words is "two hundred six million, eight hundred fifty-five thousand, eighty-nine".