228586706658 has 18 divisors (see below), whose sum is σ = 495275592747. Its totient is φ = 76194892740.

The previous prime is 228586706597. The next prime is 228586706669. The reversal of 228586706658 is 856607685822.

228586706658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114293353329 + 114293353329 = 338073^2 + 338073^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=338073.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 228586706595 and 228586706604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1972093 + ... + 2084783.

Almost surely, 2^228586706658 is an apocalyptic number.

228586706658 is an abundant number, since it is smaller than the sum of its proper divisors (266688886089).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228586706658 is an frugal number, since it uses more digits than its factorization.

228586706658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225390 (or 112696 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 63.

The spelling of 228586706658 in words is "two hundred twenty-eight billion, five hundred eighty-six million, seven hundred six thousand, six hundred fifty-eight".