128586667 has 16 divisors (see below), whose sum is σ = 149806080. Its totient is φ = 109216800.

The previous prime is 128586659. The next prime is 128586677. The reversal of 128586667 is 766685821.

It is not a de Polignac number, because 128586667 - 2³ = 128586659 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 128586667.

It is not an unprimeable number, because it can be changed into a prime (128586677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3388 + ... + 16390.

It is an arithmetic number, because the mean of its divisors is an integer number (9362880).

Almost surely, 2^128586667 is an apocalyptic number.

128586667 is a deficient number, since it is larger than the sum of its proper divisors (21219413).

128586667 is a wasteful number, since it uses less digits than its factorization.

128586667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13074.

The product of its digits is 967680, while the sum is 49.

The square root of 128586667 is about 11339.6061219074. The cubic root of 128586667 is about 504.7371988178.

The spelling of 128586667 in words is "one hundred twenty-eight million, five hundred eighty-six thousand, six hundred sixty-seven".