206555630 has 8 divisors (see below), whose sum is σ = 371800152. Its totient is φ = 82622248.

The previous prime is 206555623. The next prime is 206555633. The reversal of 206555630 is 36555602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206555633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10327772 + ... + 10327791.

It is an arithmetic number, because the mean of its divisors is an integer number (46475019).

Almost surely, 2^206555630 is an apocalyptic number.

206555630 is a deficient number, since it is larger than the sum of its proper divisors (165244522).

206555630 is a wasteful number, since it uses less digits than its factorization.

206555630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20655570.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 206555630 is about 14372.0433481116. The cubic root of 206555630 is about 591.1245716052.

The spelling of 206555630 in words is "two hundred six million, five hundred fifty-five thousand, six hundred thirty".