128716627 has 8 divisors (see below), whose sum is σ = 138778976. Its totient is φ = 118677312.

The previous prime is 128716591. The next prime is 128716631. The reversal of 128716627 is 726617821.

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

It is not a de Polignac number, because 128716627 - 2⁷ = 128716499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128716627.

It is not an unprimeable number, because it can be changed into a prime (128716657) 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, 6898 + ... + 17464.

It is an arithmetic number, because the mean of its divisors is an integer number (17347372).

Almost surely, 2^128716627 is an apocalyptic number.

128716627 is a deficient number, since it is larger than the sum of its proper divisors (10062349).

128716627 is a wasteful number, since it uses less digits than its factorization.

128716627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517.

The product of its digits is 56448, while the sum is 40.

The square root of 128716627 is about 11345.3350325145. The cubic root of 128716627 is about 504.9071841969.

The spelling of 128716627 in words is "one hundred twenty-eight million, seven hundred sixteen thousand, six hundred twenty-seven".