128686063 has 8 divisors (see below), whose sum is σ = 140780160. Its totient is φ = 116657880.

The previous prime is 128686049. The next prime is 128686093. The reversal of 128686063 is 360686821.

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 128686063 - 2⁹ = 128685551 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 (128686013) 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, 12345 + ... + 20242.

It is an arithmetic number, because the mean of its divisors is an integer number (17597520).

Almost surely, 2^128686063 is an apocalyptic number.

128686063 is a deficient number, since it is larger than the sum of its proper divisors (12094097).

128686063 is a wasteful number, since it uses less digits than its factorization.

128686063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32957.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 128686063 is about 11343.9879672010. The cubic root of 128686063 is about 504.8672173199.

The spelling of 128686063 in words is "one hundred twenty-eight million, six hundred eighty-six thousand, sixty-three".