28668684683 has 2 divisors, whose sum is σ = 28668684684. Its totient is φ = 28668684682.

The previous prime is 28668684643. The next prime is 28668684721. The reversal of 28668684683 is 38648686682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28668684683 - 2⁸ = 28668684427 is a prime.

It is not a weakly prime, because it can be changed into another prime (28668684643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14334342341 + 14334342342.

It is an arithmetic number, because the mean of its divisors is an integer number (14334342342).

Almost surely, 2^28668684683 is an apocalyptic number.

28668684683 is a deficient number, since it is larger than the sum of its proper divisors (1).

28668684683 is an equidigital number, since it uses as much as digits as its factorization.

28668684683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127401984, while the sum is 65.

The spelling of 28668684683 in words is "twenty-eight billion, six hundred sixty-eight million, six hundred eighty-four thousand, six hundred eighty-three".