8508678681 has 4 divisors (see below), whose sum is σ = 11344904912. Its totient is φ = 5672452452.

The previous prime is 8508678641. The next prime is 8508678713. The reversal of 8508678681 is 1868768058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8508678681 - 2⁶ = 8508678617 is a prime.

It is a super-2 number, since 2×8508678681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8508678611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418113111 + ... + 1418113116.

It is an arithmetic number, because the mean of its divisors is an integer number (2836226228).

Almost surely, 2^8508678681 is an apocalyptic number.

It is an amenable number.

8508678681 is a deficient number, since it is larger than the sum of its proper divisors (2836226231).

8508678681 is a wasteful number, since it uses less digits than its factorization.

8508678681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836226230.

The product of its (nonzero) digits is 5160960, while the sum is 57.

The square root of 8508678681 is about 92242.4993210830. The cubic root of 8508678681 is about 2041.5218908294.

The spelling of 8508678681 in words is "eight billion, five hundred eight million, six hundred seventy-eight thousand, six hundred eighty-one".