201712668 has 24 divisors (see below), whose sum is σ = 491127168. Its totient is φ = 64314096.

The previous prime is 201712649. The next prime is 201712697. The reversal of 201712668 is 866217102.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 365146 + ... + 365697.

It is an arithmetic number, because the mean of its divisors is an integer number (20463632).

Almost surely, 2^201712668 is an apocalyptic number.

It is an amenable number.

201712668 is an abundant number, since it is smaller than the sum of its proper divisors (289414500).

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

201712668 is a wasteful number, since it uses less digits than its factorization.

201712668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730873 (or 730871 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 201712668 is about 14202.5585019038. The cubic root of 201712668 is about 586.4680958190.

The spelling of 201712668 in words is "two hundred one million, seven hundred twelve thousand, six hundred sixty-eight".