128655759 has 8 divisors (see below), whose sum is σ = 172775680. Its totient is φ = 85153176.

The previous prime is 128655733. The next prime is 128655781. The reversal of 128655759 is 957556821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128655759 - 2¹⁶ = 128590223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128655259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153847 + ... + 154680.

It is an arithmetic number, because the mean of its divisors is an integer number (21596960).

Almost surely, 2^128655759 is an apocalyptic number.

128655759 is a deficient number, since it is larger than the sum of its proper divisors (44119921).

128655759 is a wasteful number, since it uses less digits than its factorization.

128655759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308669.

The product of its digits is 756000, while the sum is 48.

The square root of 128655759 is about 11342.6522030784. The cubic root of 128655759 is about 504.8275841825.

The spelling of 128655759 in words is "one hundred twenty-eight million, six hundred fifty-five thousand, seven hundred fifty-nine".