128606 has 4 divisors (see below), whose sum is σ = 192912. Its totient is φ = 64302.

The previous prime is 128603. The next prime is 128621. The reversal of 128606 is 606821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 606821 = 239 ⋅2539.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32150 + ... + 32153.

It is an arithmetic number, because the mean of its divisors is an integer number (48228).

2¹²⁸⁶⁰⁶ is an apocalyptic number.

128606 is a deficient number, since it is larger than the sum of its proper divisors (64306).

128606 is an equidigital number, since it uses as much as digits as its factorization.

128606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64305.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 128606 is about 358.6167871140. The cubic root of 128606 is about 50.4762493289.

The spelling of 128606 in words is "one hundred twenty-eight thousand, six hundred six".