206855850 has 96 divisors (see below), whose sum is σ = 544340160. Its totient is φ = 51840000.

The previous prime is 206855849. The next prime is 206855851. The reversal of 206855850 is 58558602.

206855850 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (206855849) and next prime (206855851).

It is a junction number, because it is equal to n+sod(n) for n = 206855799 and 206855808.

It is not an unprimeable number, because it can be changed into a prime (206855851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 515650 + ... + 516050.

It is an arithmetic number, because the mean of its divisors is an integer number (5670210).

Almost surely, 2^206855850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206855850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272170080).

206855850 is an abundant number, since it is smaller than the sum of its proper divisors (337484310).

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

206855850 is a wasteful number, since it uses less digits than its factorization.

206855850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 206855850 is about 14382.4841387015. The cubic root of 206855850 is about 591.4108246076.

The spelling of 206855850 in words is "two hundred six million, eight hundred fifty-five thousand, eight hundred fifty".