201664306 has 8 divisors (see below), whose sum is σ = 302572080. Its totient is φ = 100806948.

The previous prime is 201664277. The next prime is 201664321. The reversal of 201664306 is 603466102.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136 + ... + 20083.

It is an arithmetic number, because the mean of its divisors is an integer number (37821510).

Almost surely, 2^201664306 is an apocalyptic number.

201664306 is a deficient number, since it is larger than the sum of its proper divisors (100907774).

201664306 is a wasteful number, since it uses less digits than its factorization.

201664306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25208.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 201664306 is about 14200.8558192808. The cubic root of 201664306 is about 586.4212221523.

The spelling of 201664306 in words is "two hundred one million, six hundred sixty-four thousand, three hundred six".