206555361 has 8 divisors (see below), whose sum is σ = 275483040. Its totient is φ = 137665632.

The previous prime is 206555357. The next prime is 206555381. The reversal of 206555361 is 163555602.

206555361 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 206555361 - 2² = 206555357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206555381) 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, 7626 + ... + 21708.

It is an arithmetic number, because the mean of its divisors is an integer number (34435380).

Almost surely, 2^206555361 is an apocalyptic number.

It is an amenable number.

206555361 is a deficient number, since it is larger than the sum of its proper divisors (68927679).

206555361 is a wasteful number, since it uses less digits than its factorization.

206555361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18975.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 206555361 is about 14372.0339896620. The cubic root of 206555361 is about 591.1243149954.

The spelling of 206555361 in words is "two hundred six million, five hundred fifty-five thousand, three hundred sixty-one".