8518861 has 8 divisors (see below), whose sum is σ = 9197720. Its totient is φ = 7843392.

The previous prime is 8518847. The next prime is 8518883. The reversal of 8518861 is 1688158.

It can be written as a sum of positive squares in 4 ways, for example, as 281961 + 8236900 = 531^2 + 2870^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8518861 - 2⁷ = 8518733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8518861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8518801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7435 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (1149715).

Almost surely, 2^8518861 is an apocalyptic number.

It is an amenable number.

8518861 is a deficient number, since it is larger than the sum of its proper divisors (678859).

8518861 is a wasteful number, since it uses less digits than its factorization.

8518861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695.

The product of its digits is 15360, while the sum is 37.

The square root of 8518861 is about 2918.7087898590. The cubic root of 8518861 is about 204.2335927937.

The spelling of 8518861 in words is "eight million, five hundred eighteen thousand, eight hundred sixty-one".