8706568081 has 4 divisors (see below), whose sum is σ = 8710886692. Its totient is φ = 8702249472.

The previous prime is 8706568067. The next prime is 8706568093. The reversal of 8706568081 is 1808656078.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8062423681 + 644144400 = 89791^2 + 25380^2 .

It is a cyclic number.

It is not a de Polignac number, because 8706568081 - 2⁷ = 8706567953 is a prime.

It is a super-2 number, since 2×8706568081² (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 (8706568781) 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, 2156280 + ... + 2160313.

It is an arithmetic number, because the mean of its divisors is an integer number (2177721673).

Almost surely, 2^8706568081 is an apocalyptic number.

It is an amenable number.

8706568081 is a deficient number, since it is larger than the sum of its proper divisors (4318611).

8706568081 is a wasteful number, since it uses less digits than its factorization.

8706568081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318610.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 8706568081 is about 93308.9924980438. The cubic root of 8706568081 is about 2057.2275583747.

The spelling of 8706568081 in words is "eight billion, seven hundred six million, five hundred sixty-eight thousand, eighty-one".