206214664 has 16 divisors (see below), whose sum is σ = 386837100. Its totient is φ = 103058112.

The previous prime is 206214649. The next prime is 206214667. The reversal of 206214664 is 466412602.

It can be written as a sum of positive squares in 2 ways, for example, as 206152164 + 62500 = 14358^2 + 250^2 .

It is not an unprimeable number, because it can be changed into a prime (206214667) 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, 16602 + ... + 26230.

Almost surely, 2^206214664 is an apocalyptic number.

It is an amenable number.

206214664 is a deficient number, since it is larger than the sum of its proper divisors (180622436).

206214664 is a wasteful number, since it uses less digits than its factorization.

206214664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312 (or 12308 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 206214664 is about 14360.1763220373. The cubic root of 206214664 is about 590.7991316170.

The spelling of 206214664 in words is "two hundred six million, two hundred fourteen thousand, six hundred sixty-four".