206143064 has 8 divisors (see below), whose sum is σ = 386518260. Its totient is φ = 103071528.

The previous prime is 206143061. The next prime is 206143099. The reversal of 206143064 is 460341602.

206143064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206143061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12883934 + ... + 12883949.

Almost surely, 2^206143064 is an apocalyptic number.

It is an amenable number.

206143064 is a deficient number, since it is larger than the sum of its proper divisors (180375196).

206143064 is a wasteful number, since it uses less digits than its factorization.

206143064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25767889 (or 25767885 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 206143064 is about 14357.6830999991. The cubic root of 206143064 is about 590.7307463823.

Adding to 206143064 its reverse (460341602), we get a palindrome (666484666).

The spelling of 206143064 in words is "two hundred six million, one hundred forty-three thousand, sixty-four".