8815 has 8 divisors (see below), whose sum is σ = 11088. Its totient is φ = 6720.

The previous prime is 8807. The next prime is 8819. The reversal of 8815 is 5188.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8815 - 2³ = 8807 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8819) 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, 184 + ... + 226.

It is an arithmetic number, because the mean of its divisors is an integer number (1386).

2⁸⁸¹⁵ is an apocalyptic number.

8815 is a deficient number, since it is larger than the sum of its proper divisors (2273).

8815 is a wasteful number, since it uses less digits than its factorization.

8815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89.

The product of its digits is 320, while the sum is 22.

The square root of 8815 is about 93.8882314244. Note that the first 3 decimals coincide. The cubic root of 8815 is about 20.6573261063.

The spelling of 8815 in words is "eight thousand, eight hundred fifteen".