8116815 has 32 divisors (see below), whose sum is σ = 15492096. Its totient is φ = 3548160.

The previous prime is 8116813. The next prime is 8116817. The reversal of 8116815 is 5186118.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8116813) and next prime (8116817).

It is not a de Polignac number, because 8116815 - 2¹ = 8116813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8116813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735 + ... + 4095.

It is an arithmetic number, because the mean of its divisors is an integer number (484128).

Almost surely, 2^8116815 is an apocalyptic number.

8116815 is a deficient number, since it is larger than the sum of its proper divisors (7375281).

8116815 is a wasteful number, since it uses less digits than its factorization.

8116815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399.

The product of its digits is 1920, while the sum is 30.

The square root of 8116815 is about 2849.0024570014. The cubic root of 8116815 is about 200.9687582937.

It can be divided in two parts, 811 and 6815, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 8116815 in words is "eight million, one hundred sixteen thousand, eight hundred fifteen".