206861418 has 32 divisors (see below), whose sum is σ = 460468800. Its totient is φ = 68837328.

The previous prime is 206861407. The next prime is 206861449. The reversal of 206861418 is 814168602.

206861418 is a `hidden beast` number, since 20 + 6 + 8 + 614 + 18 = 666.

206861418 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 32680 + ... + 38492.

It is an arithmetic number, because the mean of its divisors is an integer number (14389650).

Almost surely, 2^206861418 is an apocalyptic number.

206861418 is an abundant number, since it is smaller than the sum of its proper divisors (253607382).

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

206861418 is a wasteful number, since it uses less digits than its factorization.

206861418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483 (or 6477 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 206861418 is about 14382.6777061853. The cubic root of 206861418 is about 591.4161309533.

The spelling of 206861418 in words is "two hundred six million, eight hundred sixty-one thousand, four hundred eighteen".