8118505 has 4 divisors (see below), whose sum is σ = 9742212. Its totient is φ = 6494800.

The previous prime is 8118499. The next prime is 8118511. The reversal of 8118505 is 5058118.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8118499) and next prime (8118511).

It can be written as a sum of positive squares in 2 ways, for example, as 6365529 + 1752976 = 2523^2 + 1324^2 .

It is not a de Polignac number, because 8118505 - 2¹¹ = 8116457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811846 + ... + 811855.

It is an arithmetic number, because the mean of its divisors is an integer number (2435553).

Almost surely, 2^8118505 is an apocalyptic number.

It is an amenable number.

8118505 is a deficient number, since it is larger than the sum of its proper divisors (1623707).

8118505 is a wasteful number, since it uses less digits than its factorization.

8118505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623706.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 8118505 is about 2849.2990366053. The cubic root of 8118505 is about 200.9827052106.

It can be divided in two parts, 811 and 8505, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 8118505 in words is "eight million, one hundred eighteen thousand, five hundred five".