201668241 has 8 divisors (see below), whose sum is σ = 276158464. Its totient is φ = 130811760.

The previous prime is 201668239. The next prime is 201668251. The reversal of 201668241 is 142866102.

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

It is not a de Polignac number, because 201668241 - 2¹ = 201668239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201668199 and 201668208.

It is not an unprimeable number, because it can be changed into a prime (201668221) by changing a digit.

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, 908305 + ... + 908526.

It is an arithmetic number, because the mean of its divisors is an integer number (34519808).

Almost surely, 2^201668241 is an apocalyptic number.

It is an amenable number.

201668241 is a deficient number, since it is larger than the sum of its proper divisors (74490223).

201668241 is a wasteful number, since it uses less digits than its factorization.

201668241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816871.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 201668241 is about 14200.9943665928. The cubic root of 201668241 is about 586.4250363333.

The spelling of 201668241 in words is "two hundred one million, six hundred sixty-eight thousand, two hundred forty-one".