206106009 has 8 divisors (see below), whose sum is σ = 281199072. Its totient is φ = 134208480.

The previous prime is 206106001. The next prime is 206106031. The reversal of 206106009 is 900601602.

206106009 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 206106009 - 2³ = 206106001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206106009.

It is not an unprimeable number, because it can be changed into a prime (206106001) 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, 798732 + ... + 798989.

It is an arithmetic number, because the mean of its divisors is an integer number (35149884).

Almost surely, 2^206106009 is an apocalyptic number.

It is an amenable number.

206106009 is a deficient number, since it is larger than the sum of its proper divisors (75093063).

206106009 is a wasteful number, since it uses less digits than its factorization.

206106009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597767.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 206106009 is about 14356.3926179246. The cubic root of 206106009 is about 590.6953488949.

The spelling of 206106009 in words is "two hundred six million, one hundred six thousand, nine".