168668387 has 2 divisors, whose sum is σ = 168668388. Its totient is φ = 168668386.

The previous prime is 168668369. The next prime is 168668393. The reversal of 168668387 is 783866861.

168668387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168668387 - 2¹⁶ = 168602851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168668327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84334193 + 84334194.

It is an arithmetic number, because the mean of its divisors is an integer number (84334194).

Almost surely, 2^168668387 is an apocalyptic number.

168668387 is a deficient number, since it is larger than the sum of its proper divisors (1).

168668387 is an equidigital number, since it uses as much as digits as its factorization.

168668387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 53.

The square root of 168668387 is about 12987.2393910330. The cubic root of 168668387 is about 552.5156245453.

The spelling of 168668387 in words is "one hundred sixty-eight million, six hundred sixty-eight thousand, three hundred eighty-seven".