216568226 has 8 divisors (see below), whose sum is σ = 371259840. Its totient is φ = 92814948.

The previous prime is 216568223. The next prime is 216568241. The reversal of 216568226 is 622865612.

216568226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 216568226.

It is not an unprimeable number, because it can be changed into a prime (216568223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7734566 + ... + 7734593.

It is an arithmetic number, because the mean of its divisors is an integer number (46407480).

Almost surely, 2^216568226 is an apocalyptic number.

216568226 is a deficient number, since it is larger than the sum of its proper divisors (154691614).

216568226 is a wasteful number, since it uses less digits than its factorization.

216568226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15469168.

The product of its digits is 69120, while the sum is 38.

The square root of 216568226 is about 14716.2572007967. The cubic root of 216568226 is about 600.5256744946.

The spelling of 216568226 in words is "two hundred sixteen million, five hundred sixty-eight thousand, two hundred twenty-six".