128678597 has 8 divisors (see below), whose sum is σ = 134803200. Its totient is φ = 122666544.

The previous prime is 128678579. The next prime is 128678609. The reversal of 128678597 is 795876821.

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 128678597 - 2¹⁶ = 128613061 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 (128678197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25793 + ... + 30374.

It is an arithmetic number, because the mean of its divisors is an integer number (16850400).

Almost surely, 2^128678597 is an apocalyptic number.

It is an amenable number.

128678597 is a deficient number, since it is larger than the sum of its proper divisors (6124603).

128678597 is an equidigital number, since it uses as much as digits as its factorization.

128678597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56275.

The product of its digits is 1693440, while the sum is 53.

The square root of 128678597 is about 11343.6588894413. The cubic root of 128678597 is about 504.8574534769.

The spelling of 128678597 in words is "one hundred twenty-eight million, six hundred seventy-eight thousand, five hundred ninety-seven".