206543064 has 128 divisors (see below), whose sum is σ = 673021440. Its totient is φ = 51259392.

The previous prime is 206543039. The next prime is 206543087. The reversal of 206543064 is 460345602.

206543064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34347 + ... + 39909.

It is an arithmetic number, because the mean of its divisors is an integer number (5257980).

Almost surely, 2^206543064 is an apocalyptic number.

206543064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206543064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336510720).

206543064 is an abundant number, since it is smaller than the sum of its proper divisors (466478376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206543064 is a wasteful number, since it uses less digits than its factorization.

206543064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609 (or 5605 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 206543064 is about 14371.6061732849. The cubic root of 206543064 is about 591.1125841614.

Adding to 206543064 its reverse (460345602), we get a palindrome (666888666).

The spelling of 206543064 in words is "two hundred six million, five hundred forty-three thousand, sixty-four".