8506 has 4 divisors (see below), whose sum is σ = 12762.
Its totient is φ = 4252.
The previous prime is 8501. The next prime is 8513. The reversal of 8506 is 6058.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 8281 + 225 = 91^2 + 15^2
It is a nialpdrome in base 11.
It is not an unprimeable number, because it can be changed into a prime (8501) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2125 + ... + 2128.
28506 is an apocalyptic number.
8506 is a deficient number, since it is larger than the sum of its proper divisors (4256).
8506 is a wasteful number, since it uses less digits than its factorization.
8506 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4255.
The product of its (nonzero) digits is 240, while the sum is 19.
The square root of 8506 is about 92.2279784014.
The cubic root of 8506 is about 20.4130763273.
The spelling of 8506 in words is "eight thousand, five hundred six".