206664812 has 24 divisors (see below), whose sum is σ = 367960320. Its totient is φ = 101543120.

The previous prime is 206664811. The next prime is 206664827. The reversal of 206664812 is 218466602.

It is not an unprimeable number, because it can be changed into a prime (206664811) 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 7 ways as a sum of consecutive naturals, for example, 100943 + ... + 102969.

It is an arithmetic number, because the mean of its divisors is an integer number (15331680).

Almost surely, 2^206664812 is an apocalyptic number.

It is an amenable number.

206664812 is a deficient number, since it is larger than the sum of its proper divisors (161295508).

206664812 is a wasteful number, since it uses less digits than its factorization.

206664812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 206664812 is about 14375.8412623401. The cubic root of 206664812 is about 591.2287062552.

The spelling of 206664812 in words is "two hundred six million, six hundred sixty-four thousand, eight hundred twelve".