228668579 has 2 divisors, whose sum is σ = 228668580. Its totient is φ = 228668578.

The previous prime is 228668551. The next prime is 228668623. The reversal of 228668579 is 975866822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228668579 - 2¹⁶ = 228603043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228668579.

It is not a weakly prime, because it can be changed into another prime (228668519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114334289 + 114334290.

It is an arithmetic number, because the mean of its divisors is an integer number (114334290).

Almost surely, 2^228668579 is an apocalyptic number.

228668579 is a deficient number, since it is larger than the sum of its proper divisors (1).

228668579 is an equidigital number, since it uses as much as digits as its factorization.

228668579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The square root of 228668579 is about 15121.7915274613. The cubic root of 228668579 is about 611.5080299811.

The spelling of 228668579 in words is "two hundred twenty-eight million, six hundred sixty-eight thousand, five hundred seventy-nine".