228622666 has 16 divisors (see below), whose sum is σ = 348909120. Its totient is φ = 112335520.

The previous prime is 228622663. The next prime is 228622679. The reversal of 228622666 is 666226822.

It is not an unprimeable number, because it can be changed into a prime (228622663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25881 + ... + 33571.

It is an arithmetic number, because the mean of its divisors is an integer number (21806820).

Almost surely, 2^228622666 is an apocalyptic number.

228622666 is a deficient number, since it is larger than the sum of its proper divisors (120286454).

228622666 is a wasteful number, since it uses less digits than its factorization.

228622666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949.

The product of its digits is 165888, while the sum is 40.

The square root of 228622666 is about 15120.2733440900. The cubic root of 228622666 is about 611.4671002250.

The spelling of 228622666 in words is "two hundred twenty-eight million, six hundred twenty-two thousand, six hundred sixty-six".