228676769 has 2 divisors, whose sum is σ = 228676770. Its totient is φ = 228676768.

The previous prime is 228676757. The next prime is 228676771. The reversal of 228676769 is 967676822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186595600 + 42081169 = 13660^2 + 6487^2 .

It is a cyclic number.

It is not a de Polignac number, because 228676769 - 2⁴ = 228676753 is a prime.

It is a super-2 number, since 2×228676769² = 104586129360558722, which contains 22 as substring.

Together with 228676771, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228676769.

It is not a weakly prime, because it can be changed into another prime (228676069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114338384 + 114338385.

It is an arithmetic number, because the mean of its divisors is an integer number (114338385).

Almost surely, 2^228676769 is an apocalyptic number.

It is an amenable number.

228676769 is a deficient number, since it is larger than the sum of its proper divisors (1).

228676769 is an equidigital number, since it uses as much as digits as its factorization.

228676769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The square root of 228676769 is about 15122.0623262834. The cubic root of 228676769 is about 611.5153304900.

Adding to 228676769 its sum of digits (53), we get a palindrome (228676822).

The spelling of 228676769 in words is "two hundred twenty-eight million, six hundred seventy-six thousand, seven hundred sixty-nine".