8006870781 has 96 divisors (see below), whose sum is σ = 14738051328. Its totient is φ = 4075868160.

The previous prime is 8006870747. The next prime is 8006870813. The reversal of 8006870781 is 1870786008.

It is not a de Polignac number, because 8006870781 - 2⁹ = 8006870269 is a prime.

It is a super-2 number, since 2×8006870781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8006870981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3968685 + ... + 3970701.

It is an arithmetic number, because the mean of its divisors is an integer number (153521368).

Almost surely, 2^8006870781 is an apocalyptic number.

It is an amenable number.

8006870781 is a deficient number, since it is larger than the sum of its proper divisors (6731180547).

8006870781 is a wasteful number, since it uses less digits than its factorization.

8006870781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211 (or 2208 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 8006870781 is about 89481.1196901335. The cubic root of 8006870781 is about 2000.5724012461.

The spelling of 8006870781 in words is "eight billion, six million, eight hundred seventy thousand, seven hundred eighty-one".