206010561 has 8 divisors (see below), whose sum is σ = 282104704. Its totient is φ = 133628400.

The previous prime is 206010503. The next prime is 206010569. The reversal of 206010561 is 165010602.

It is a happy number.

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

It is not a de Polignac number, because 206010561 - 2¹¹ = 206008513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206010569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927865 + ... + 928086.

It is an arithmetic number, because the mean of its divisors is an integer number (35263088).

Almost surely, 2^206010561 is an apocalyptic number.

It is an amenable number.

206010561 is a deficient number, since it is larger than the sum of its proper divisors (76094143).

206010561 is a wasteful number, since it uses less digits than its factorization.

206010561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855991.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 206010561 is about 14353.0679995602. The cubic root of 206010561 is about 590.6041508499.

It can be divided in two parts, 2060 and 10561, that added together give a palindrome (12621).

The spelling of 206010561 in words is "two hundred six million, ten thousand, five hundred sixty-one".