206680688 has 40 divisors (see below), whose sum is σ = 408786336. Its totient is φ = 101203200.

The previous prime is 206680687. The next prime is 206680697. The reversal of 206680688 is 886086602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206680681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410645 + ... + 411147.

Almost surely, 2^206680688 is an apocalyptic number.

It is an amenable number.

206680688 is a deficient number, since it is larger than the sum of its proper divisors (202105648).

206680688 is a wasteful number, since it uses less digits than its factorization.

206680688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 206680688 is about 14376.3934281168. The cubic root of 206680688 is about 591.2438452726.

The spelling of 206680688 in words is "two hundred six million, six hundred eighty thousand, six hundred eighty-eight".