201144666 has 8 divisors (see below), whose sum is σ = 402289344. Its totient is φ = 67048220.

The previous prime is 201144641. The next prime is 201144673. The reversal of 201144666 is 666441102.

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

201144666 is an admirable 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, 16762050 + ... + 16762061.

It is an arithmetic number, because the mean of its divisors is an integer number (50286168).

Almost surely, 2^201144666 is an apocalyptic number.

201144666 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.

201144666 is a wasteful number, since it uses less digits than its factorization.

201144666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33524116.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 201144666 is about 14182.5479375181. The cubic root of 201144666 is about 585.9171004894.

Adding to 201144666 its reverse (666441102), we get a palindrome (867585768).

The spelling of 201144666 in words is "two hundred one million, one hundred forty-four thousand, six hundred sixty-six".