201945066 has 8 divisors (see below), whose sum is σ = 403890144. Its totient is φ = 67315020.

The previous prime is 201945047. The next prime is 201945089. The reversal of 201945066 is 660549102.

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

201945066 is an admirable number.

It is a super-3 number, since 3×201945066³ (a number of 26 digits) contains 333 as substring.

It is a Curzon 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, 16828750 + ... + 16828761.

It is an arithmetic number, because the mean of its divisors is an integer number (50486268).

Almost surely, 2^201945066 is an apocalyptic number.

201945066 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.

201945066 is a wasteful number, since it uses less digits than its factorization.

201945066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33657516.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 201945066 is about 14210.7377007670. The cubic root of 201945066 is about 586.6932373612.

The spelling of 201945066 in words is "two hundred one million, nine hundred forty-five thousand, sixty-six".