216714887 has 2 divisors, whose sum is σ = 216714888. Its totient is φ = 216714886.

The previous prime is 216714877. The next prime is 216714907. The reversal of 216714887 is 788417612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216714887 - 2⁴ = 216714871 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 (216714877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108357443 + 108357444.

It is an arithmetic number, because the mean of its divisors is an integer number (108357444).

Almost surely, 2^216714887 is an apocalyptic number.

216714887 is a deficient number, since it is larger than the sum of its proper divisors (1).

216714887 is an equidigital number, since it uses as much as digits as its factorization.

216714887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 44.

The square root of 216714887 is about 14721.2393160359. The cubic root of 216714887 is about 600.6612034897.

The spelling of 216714887 in words is "two hundred sixteen million, seven hundred fourteen thousand, eight hundred eighty-seven".