228664111 has 4 divisors (see below), whose sum is σ = 246253672. Its totient is φ = 211074552.

The previous prime is 228664081. The next prime is 228664123. The reversal of 228664111 is 111466822.

228664111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 228664111 - 2⁷ = 228663983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228664811) 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, 8794761 + ... + 8794786.

It is an arithmetic number, because the mean of its divisors is an integer number (61563418).

Almost surely, 2^228664111 is an apocalyptic number.

228664111 is a deficient number, since it is larger than the sum of its proper divisors (17589561).

228664111 is a wasteful number, since it uses less digits than its factorization.

228664111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17589560.

The product of its digits is 4608, while the sum is 31.

The square root of 228664111 is about 15121.6437929215. The cubic root of 228664111 is about 611.5040471636.

The spelling of 228664111 in words is "two hundred twenty-eight million, six hundred sixty-four thousand, one hundred eleven".