216227769 has 16 divisors (see below), whose sum is σ = 293874240. Its totient is φ = 141393600.

The previous prime is 216227749. The next prime is 216227773. The reversal of 216227769 is 967722612.

It is not a de Polignac number, because 216227769 - 2²¹ = 214130617 is a prime.

It is a super-2 number, since 2×216227769² = 93508896173434722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216227769.

It is not an unprimeable number, because it can be changed into a prime (216227719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29754 + ... + 36300.

It is an arithmetic number, because the mean of its divisors is an integer number (18367140).

Almost surely, 2^216227769 is an apocalyptic number.

It is an amenable number.

216227769 is a deficient number, since it is larger than the sum of its proper divisors (77646471).

216227769 is a wasteful number, since it uses less digits than its factorization.

216227769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760.

The product of its digits is 127008, while the sum is 42.

The square root of 216227769 is about 14704.6852737486. The cubic root of 216227769 is about 600.2108231362.

The spelling of 216227769 in words is "two hundred sixteen million, two hundred twenty-seven thousand, seven hundred sixty-nine".