216966367 has 2 divisors, whose sum is σ = 216966368. Its totient is φ = 216966366.

The previous prime is 216966331. The next prime is 216966389. The reversal of 216966367 is 763669612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216966367 - 2¹⁵ = 216933599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216966397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108483183 + 108483184.

It is an arithmetic number, because the mean of its divisors is an integer number (108483184).

Almost surely, 2^216966367 is an apocalyptic number.

216966367 is a deficient number, since it is larger than the sum of its proper divisors (1).

216966367 is an equidigital number, since it uses as much as digits as its factorization.

216966367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 216966367 is about 14729.7782400143. The cubic root of 216966367 is about 600.8934531679.

The spelling of 216966367 in words is "two hundred sixteen million, nine hundred sixty-six thousand, three hundred sixty-seven".