206089680 has 40 divisors (see below), whose sum is σ = 638878752. Its totient is φ = 54957184.

The previous prime is 206089673. The next prime is 206089699. The reversal of 206089680 is 86980602.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429114 + ... + 429593.

Almost surely, 2^206089680 is an apocalyptic number.

206089680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206089680 is an abundant number, since it is smaller than the sum of its proper divisors (432789072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206089680 is a wasteful number, since it uses less digits than its factorization.

206089680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858723 (or 858717 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 206089680 is about 14355.8239053006. The cubic root of 206089680 is about 590.6797489630.

The spelling of 206089680 in words is "two hundred six million, eighty-nine thousand, six hundred eighty".