206606767700 has 144 divisors (see below), whose sum is σ = 479624302080. Its totient is φ = 77115118080.

The previous prime is 206606767699. The next prime is 206606767721. The reversal of 206606767700 is 7767606602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10287869 + ... + 10307931.

It is an arithmetic number, because the mean of its divisors is an integer number (3330724320).

Almost surely, 2^206606767700 is an apocalyptic number.

206606767700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206606767700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239812151040).

206606767700 is an abundant number, since it is smaller than the sum of its proper divisors (273017534380).

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

206606767700 is a wasteful number, since it uses less digits than its factorization.

206606767700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20226 (or 20219 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 47.

The spelling of 206606767700 in words is "two hundred six billion, six hundred six million, seven hundred sixty-seven thousand, seven hundred".