206032561 has 16 divisors (see below), whose sum is σ = 250070400. Its totient is φ = 165811968.

The previous prime is 206032549. The next prime is 206032573. The reversal of 206032561 is 165230602.

It is an interprime number because it is at equal distance from previous prime (206032549) and next prime (206032573).

It is not a de Polignac number, because 206032561 - 2⁵ = 206032529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206032591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8175 + ... + 21883.

It is an arithmetic number, because the mean of its divisors is an integer number (15629400).

Almost surely, 2^206032561 is an apocalyptic number.

It is an amenable number.

206032561 is a deficient number, since it is larger than the sum of its proper divisors (44037839).

206032561 is a wasteful number, since it uses less digits than its factorization.

206032561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13848.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 206032561 is about 14353.8343657714. The cubic root of 206032561 is about 590.6251737670.

The spelling of 206032561 in words is "two hundred six million, thirty-two thousand, five hundred sixty-one".