8715 has 16 divisors (see below), whose sum is σ = 16128.
Its totient is φ = 3936.
The previous prime is 8713. The next prime is 8719. The reversal of 8715 is 5178.
It is a happy number.
It is not a de Polignac number, because 8715 - 21 = 8713 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a junction number, because it is equal to n+sod(n) for n = 8691 and 8700.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 8715.
It is not an unprimeable number, because it can be changed into a prime (8713) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64 + ... + 146.
It is an arithmetic number, because the mean of its divisors is an integer number (1008).
28715 is an apocalyptic number.
8715 is a deficient number, since it is larger than the sum of its proper divisors (7413).
8715 is a wasteful number, since it uses less digits than its factorization.
8715 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 98.
The product of its digits is 280, while the sum is 21.
The square root of 8715 is about 93.3541643420.
The cubic root of 8715 is about 20.5789145484.
The spelling of 8715 in words is "eight thousand, seven hundred fifteen".