8076809721 has 8 divisors (see below), whose sum is σ = 10869725664. Its totient is φ = 5334216800.

The previous prime is 8076809687. The next prime is 8076809753. The reversal of 8076809721 is 1279086708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8076809721 - 2¹⁹ = 8076285433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8076809771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12580380 + ... + 12581021.

It is an arithmetic number, because the mean of its divisors is an integer number (1358715708).

Almost surely, 2^8076809721 is an apocalyptic number.

It is an amenable number.

8076809721 is a deficient number, since it is larger than the sum of its proper divisors (2792915943).

8076809721 is a wasteful number, since it uses less digits than its factorization.

8076809721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25161511.

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 8076809721 is about 89871.0727709423. The cubic root of 8076809721 is about 2006.3804334721.

The spelling of 8076809721 in words is "eight billion, seventy-six million, eight hundred nine thousand, seven hundred twenty-one".