206066215 has 4 divisors (see below), whose sum is σ = 247279464. Its totient is φ = 164852968.

The previous prime is 206066213. The next prime is 206066243. The reversal of 206066215 is 512660602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206066215 - 2¹ = 206066213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206066213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20606617 + ... + 20606626.

It is an arithmetic number, because the mean of its divisors is an integer number (61819866).

Almost surely, 2^206066215 is an apocalyptic number.

206066215 is a deficient number, since it is larger than the sum of its proper divisors (41213249).

206066215 is an equidigital number, since it uses as much as digits as its factorization.

206066215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41213248.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 206066215 is about 14355.0066179016. The cubic root of 206066215 is about 590.6573302012.

The spelling of 206066215 in words is "two hundred six million, sixty-six thousand, two hundred fifteen".