206660768 has 24 divisors (see below), whose sum is σ = 407775060. Its totient is φ = 103098880.

The previous prime is 206660767. The next prime is 206660791. The reversal of 206660768 is 867066602.

It can be written as a sum of positive squares in 2 ways, for example, as 205865104 + 795664 = 14348^2 + 892^2 .

It is not an unprimeable number, because it can be changed into a prime (206660767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7748 + ... + 21756.

Almost surely, 2^206660768 is an apocalyptic number.

It is an amenable number.

206660768 is a deficient number, since it is larger than the sum of its proper divisors (201114292).

206660768 is a wasteful number, since it uses less digits than its factorization.

206660768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480 (or 14472 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 206660768 is about 14375.7006090138. The cubic root of 206660768 is about 591.2248498585.

The spelling of 206660768 in words is "two hundred six million, six hundred sixty thousand, seven hundred sixty-eight".