206868988 has 12 divisors (see below), whose sum is σ = 383316192. Its totient is φ = 97350080.

The previous prime is 206868973. The next prime is 206868997. The reversal of 206868988 is 889868602.

206868988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206868988² = 85589556392288288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521028 + ... + 1521163.

It is an arithmetic number, because the mean of its divisors is an integer number (31943016).

Almost surely, 2^206868988 is an apocalyptic number.

It is an amenable number.

206868988 is a deficient number, since it is larger than the sum of its proper divisors (176447204).

206868988 is a wasteful number, since it uses less digits than its factorization.

206868988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042212 (or 3042210 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The square root of 206868988 is about 14382.9408675695. The cubic root of 206868988 is about 591.4233450672.

The spelling of 206868988 in words is "two hundred six million, eight hundred sixty-eight thousand, nine hundred eighty-eight".