128677307 has 8 divisors (see below), whose sum is σ = 142067520. Its totient is φ = 115569160.

The previous prime is 128677261. The next prime is 128677309. The reversal of 128677307 is 703776821.

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

It is a cyclic number.

It is not a de Polignac number, because 128677307 - 2¹⁴ = 128660923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128677309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69557 + ... + 71382.

It is an arithmetic number, because the mean of its divisors is an integer number (17758440).

Almost surely, 2^128677307 is an apocalyptic number.

128677307 is a deficient number, since it is larger than the sum of its proper divisors (13390213).

128677307 is a wasteful number, since it uses less digits than its factorization.

128677307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141033.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 128677307 is about 11343.6020293379. The cubic root of 128677307 is about 504.8557664098.

The spelling of 128677307 in words is "one hundred twenty-eight million, six hundred seventy-seven thousand, three hundred seven".