206606620 has 24 divisors (see below), whose sum is σ = 473317488. Its totient is φ = 75129600.

The previous prime is 206606611. The next prime is 206606623. The reversal of 206606620 is 26606602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206606623) 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, 469341 + ... + 469780.

It is an arithmetic number, because the mean of its divisors is an integer number (19721562).

Almost surely, 2^206606620 is an apocalyptic number.

206606620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206606620 is an abundant number, since it is smaller than the sum of its proper divisors (266710868).

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

206606620 is a wasteful number, since it uses less digits than its factorization.

206606620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939141 (or 939139 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 206606620 is about 14373.8171687273. The cubic root of 206606620 is about 591.1732089659.

The spelling of 206606620 in words is "two hundred six million, six hundred six thousand, six hundred twenty".