206855500 has 24 divisors (see below), whose sum is σ = 451773504. Its totient is φ = 82742000.

The previous prime is 206855479. The next prime is 206855533. The reversal of 206855500 is 5558602.

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, 206356 + ... + 207355.

It is an arithmetic number, because the mean of its divisors is an integer number (18823896).

Almost surely, 2^206855500 is an apocalyptic number.

206855500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206855500 is an abundant number, since it is smaller than the sum of its proper divisors (244918004).

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

206855500 is a wasteful number, since it uses less digits than its factorization.

206855500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413730 (or 413718 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 206855500 is about 14382.4719711182. The cubic root of 206855500 is about 591.4104910518.

The spelling of 206855500 in words is "two hundred six million, eight hundred fifty-five thousand, five hundred".