216095669 has 2 divisors, whose sum is σ = 216095670. Its totient is φ = 216095668.

The previous prime is 216095641. The next prime is 216095713. The reversal of 216095669 is 966590612.

It is an a-pointer prime, because the next prime (216095713) can be obtained adding 216095669 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199854769 + 16240900 = 14137^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 216095669 - 2²⁴ = 199318453 is a prime.

It is a super-2 number, since 2×216095669² = 93394676321115122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216095069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108047834 + 108047835.

It is an arithmetic number, because the mean of its divisors is an integer number (108047835).

Almost surely, 2^216095669 is an apocalyptic number.

It is an amenable number.

216095669 is a deficient number, since it is larger than the sum of its proper divisors (1).

216095669 is an equidigital number, since it uses as much as digits as its factorization.

216095669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 216095669 is about 14700.1928218646. The cubic root of 216095669 is about 600.0885693326.

The spelling of 216095669 in words is "two hundred sixteen million, ninety-five thousand, six hundred sixty-nine".