206382681 has 16 divisors (see below), whose sum is σ = 309625600. Its totient is φ = 135845424.

The previous prime is 206382679. The next prime is 206382697. The reversal of 206382681 is 186283602.

It is not a de Polignac number, because 206382681 - 2¹ = 206382679 is a prime.

It is a super-2 number, since 2×206382681² = 85187622033495522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (206382641) 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 15 ways as a sum of consecutive naturals, for example, 46246 + ... + 50511.

It is an arithmetic number, because the mean of its divisors is an integer number (19351600).

Almost surely, 2^206382681 is an apocalyptic number.

It is an amenable number.

206382681 is a deficient number, since it is larger than the sum of its proper divisors (103242919).

206382681 is an equidigital number, since it uses as much as digits as its factorization.

206382681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96845 (or 96839 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 206382681 is about 14366.0252331673. The cubic root of 206382681 is about 590.9595426968.

The spelling of 206382681 in words is "two hundred six million, three hundred eighty-two thousand, six hundred eighty-one".