201668768 has 24 divisors (see below), whose sum is σ = 453755232. Its totient is φ = 86429376.

The previous prime is 201668767. The next prime is 201668771. The reversal of 201668768 is 867866102.

It is not an unprimeable number, because it can be changed into a prime (201668767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449930 + ... + 450377.

It is an arithmetic number, because the mean of its divisors is an integer number (18906468).

Almost surely, 2^201668768 is an apocalyptic number.

201668768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

201668768 is an abundant number, since it is smaller than the sum of its proper divisors (252086464).

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

201668768 is an equidigital number, since it uses as much as digits as its factorization.

201668768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900324 (or 900316 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 201668768 is about 14201.0129216194. The cubic root of 201668768 is about 586.4255471487.

The spelling of 201668768 in words is "two hundred one million, six hundred sixty-eight thousand, seven hundred sixty-eight".