128599 has 2 divisors, whose sum is σ = 128600. Its totient is φ = 128598.

The previous prime is 128591. The next prime is 128603. The reversal of 128599 is 995821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128599 - 2³ = 128591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64299 + 64300.

It is an arithmetic number, because the mean of its divisors is an integer number (64300).

2¹²⁸⁵⁹⁹ is an apocalyptic number.

128599 is a deficient number, since it is larger than the sum of its proper divisors (1).

128599 is an equidigital number, since it uses as much as digits as its factorization.

128599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 128599 is about 358.6070272596. The cubic root of 128599 is about 50.4753335081.

It can be divided in two parts, 128 and 599, that added together give a palindrome (727).

The spelling of 128599 in words is "one hundred twenty-eight thousand, five hundred ninety-nine".