8070871321 has 4 divisors (see below), whose sum is σ = 8081533732. Its totient is φ = 8060208912.

The previous prime is 8070871271. The next prime is 8070871381. The reversal of 8070871321 is 1231780708.

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 6848390025 + 1222481296 = 82755^2 + 34964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8070871321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8070871381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330070 + ... + 5331583.

It is an arithmetic number, because the mean of its divisors is an integer number (2020383433).

Almost surely, 2^8070871321 is an apocalyptic number.

It is an amenable number.

8070871321 is a deficient number, since it is larger than the sum of its proper divisors (10662411).

8070871321 is a wasteful number, since it uses less digits than its factorization.

8070871321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662410.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 8070871321 is about 89838.0282564127. The cubic root of 8070871321 is about 2005.8885886626. Note that the first 3 decimals are identical.

The spelling of 8070871321 in words is "eight billion, seventy million, eight hundred seventy-one thousand, three hundred twenty-one".