128860577 has 2 divisors, whose sum is σ = 128860578. Its totient is φ = 128860576.

The previous prime is 128860553. The next prime is 128860591. The reversal of 128860577 is 775068821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128845201 + 15376 = 11351^2 + 124^2 .

It is an emirp because it is prime and its reverse (775068821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128860577 - 2⁸ = 128860321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128860507) 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, 64430288 + 64430289.

It is an arithmetic number, because the mean of its divisors is an integer number (64430289).

Almost surely, 2^128860577 is an apocalyptic number.

It is an amenable number.

128860577 is a deficient number, since it is larger than the sum of its proper divisors (1).

128860577 is an equidigital number, since it uses as much as digits as its factorization.

128860577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 128860577 is about 11351.6772769490. The cubic root of 128860577 is about 505.0953347446.

The spelling of 128860577 in words is "one hundred twenty-eight million, eight hundred sixty thousand, five hundred seventy-seven".