228580769 has 2 divisors, whose sum is σ = 228580770. Its totient is φ = 228580768.

The previous prime is 228580717. The next prime is 228580771. The reversal of 228580769 is 967085822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120670225 + 107910544 = 10985^2 + 10388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228580769 is a prime.

It is a super-2 number, since 2×228580769² = 104498335913262722, which contains 22 as substring.

Together with 228580771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228580789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114290384 + 114290385.

It is an arithmetic number, because the mean of its divisors is an integer number (114290385).

Almost surely, 2^228580769 is an apocalyptic number.

It is an amenable number.

228580769 is a deficient number, since it is larger than the sum of its proper divisors (1).

228580769 is an equidigital number, since it uses as much as digits as its factorization.

228580769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 228580769 is about 15118.8878228526. The cubic root of 228580769 is about 611.4297458037.

The spelling of 228580769 in words is "two hundred twenty-eight million, five hundred eighty thousand, seven hundred sixty-nine".