201668351 has 2 divisors, whose sum is σ = 201668352. Its totient is φ = 201668350.

The previous prime is 201668333. The next prime is 201668353. The reversal of 201668351 is 153866102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201668351 - 2⁶ = 201668287 is a prime.

Together with 201668353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201668353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100834175 + 100834176.

It is an arithmetic number, because the mean of its divisors is an integer number (100834176).

Almost surely, 2^201668351 is an apocalyptic number.

201668351 is a deficient number, since it is larger than the sum of its proper divisors (1).

201668351 is an equidigital number, since it uses as much as digits as its factorization.

201668351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 201668351 is about 14200.9982395605. The cubic root of 201668351 is about 586.4251429552.

The spelling of 201668351 in words is "two hundred one million, six hundred sixty-eight thousand, three hundred fifty-one".