216144667 has 2 divisors, whose sum is σ = 216144668. Its totient is φ = 216144666.

The previous prime is 216144659. The next prime is 216144697. The reversal of 216144667 is 766441612.

216144667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216144667 - 2³ = 216144659 is a prime.

It is not a weakly prime, because it can be changed into another prime (216144637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108072333 + 108072334.

It is an arithmetic number, because the mean of its divisors is an integer number (108072334).

Almost surely, 2^216144667 is an apocalyptic number.

216144667 is a deficient number, since it is larger than the sum of its proper divisors (1).

216144667 is an equidigital number, since it uses as much as digits as its factorization.

216144667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 216144667 is about 14701.8593041833. The cubic root of 216144667 is about 600.1339210323.

It can be divided in two parts, 216144 and 667, that added together give a triangular number (216811 = T₆₅₈).

The spelling of 216144667 in words is "two hundred sixteen million, one hundred forty-four thousand, six hundred sixty-seven".