128067677 has 2 divisors, whose sum is σ = 128067678. Its totient is φ = 128067676.

The previous prime is 128067673. The next prime is 128067713. The reversal of 128067677 is 776760821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125574436 + 2493241 = 11206^2 + 1579^2 .

It is a cyclic number.

It is not a de Polignac number, because 128067677 - 2² = 128067673 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128067673) 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, 64033838 + 64033839.

It is an arithmetic number, because the mean of its divisors is an integer number (64033839).

Almost surely, 2^128067677 is an apocalyptic number.

It is an amenable number.

128067677 is a deficient number, since it is larger than the sum of its proper divisors (1).

128067677 is an equidigital number, since it uses as much as digits as its factorization.

128067677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 128067677 is about 11316.6990328452. The cubic root of 128067677 is about 504.0572248054.

The spelling of 128067677 in words is "one hundred twenty-eight million, sixty-seven thousand, six hundred seventy-seven".