206600020 has 24 divisors (see below), whose sum is σ = 473302368. Its totient is φ = 75127200.

The previous prime is 206599999. The next prime is 206600033. The reversal of 206600020 is 20006602.

It is a junction number, because it is equal to n+sod(n) for n = 206599967 and 206600003.

It is a congruent number.

It is an unprimeable number.

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, 469326 + ... + 469765.

It is an arithmetic number, because the mean of its divisors is an integer number (19720932).

Almost surely, 2^206600020 is an apocalyptic number.

206600020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206600020 is an abundant number, since it is smaller than the sum of its proper divisors (266702348).

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

206600020 is a wasteful number, since it uses less digits than its factorization.

206600020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939111 (or 939109 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 206600020 is about 14373.5875827853. The cubic root of 206600020 is about 591.1669139357.

Adding to 206600020 its reverse (20006602), we get a palindrome (226606622).

The spelling of 206600020 in words is "two hundred six million, six hundred thousand, twenty".