216808127 has 2 divisors, whose sum is σ = 216808128. Its totient is φ = 216808126.

The previous prime is 216808103. The next prime is 216808159. The reversal of 216808127 is 721808612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216808127 - 2²⁴ = 200030911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210808127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108404063 + 108404064.

It is an arithmetic number, because the mean of its divisors is an integer number (108404064).

Almost surely, 2^216808127 is an apocalyptic number.

216808127 is a deficient number, since it is larger than the sum of its proper divisors (1).

216808127 is an equidigital number, since it uses as much as digits as its factorization.

216808127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 216808127 is about 14724.4058284197. The cubic root of 216808127 is about 600.7473345062.

The spelling of 216808127 in words is "two hundred sixteen million, eight hundred eight thousand, one hundred twenty-seven".