8516881 has 16 divisors (see below), whose sum is σ = 9427968. Its totient is φ = 7660800.

The previous prime is 8516873. The next prime is 8516887. The reversal of 8516881 is 1886158.

8516881 = T₁₉₈ + T₁₉₉ + ... + T₃₈₈.

It is a cyclic number.

It is not a de Polignac number, because 8516881 - 2³ = 8516873 is a prime.

It is a super-2 number, since 2×8516881² = 145074523936322, which contains 22 as substring.

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 8516881.

It is not an unprimeable number, because it can be changed into a prime (8516887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44496 + ... + 44686.

It is an arithmetic number, because the mean of its divisors is an integer number (589248).

Almost surely, 2^8516881 is an apocalyptic number.

It is an amenable number.

8516881 is a deficient number, since it is larger than the sum of its proper divisors (911087).

8516881 is a wasteful number, since it uses less digits than its factorization.

8516881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

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

The square root of 8516881 is about 2918.3695790629. The cubic root of 8516881 is about 204.2177685402.

Adding to 8516881 its product of digits (15360), we get a square (8532241 = 2921²).

The spelling of 8516881 in words is "eight million, five hundred sixteen thousand, eight hundred eighty-one".