200491806 has 8 divisors (see below), whose sum is σ = 400983624. Its totient is φ = 66830600.

The previous prime is 200491783. The next prime is 200491831. The reversal of 200491806 is 608194002.

It is a sphenic number, since it is the product of 3 distinct primes.

200491806 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16707645 + ... + 16707656.

It is an arithmetic number, because the mean of its divisors is an integer number (50122953).

Almost surely, 2^200491806 is an apocalyptic number.

200491806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

200491806 is a wasteful number, since it uses less digits than its factorization.

200491806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33415306.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 200491806 is about 14159.5129153513. The cubic root of 200491806 is about 585.2825050892.

The spelling of 200491806 in words is "two hundred million, four hundred ninety-one thousand, eight hundred six".