8341716721 has 4 divisors (see below), whose sum is σ = 8983387252. Its totient is φ = 7700046192.

The previous prime is 8341716701. The next prime is 8341716749. The reversal of 8341716721 is 1276171438.

It is a happy number.

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 1039159696 + 7302557025 = 32236^2 + 85455^2 .

It is a cyclic number.

It is not a de Polignac number, because 8341716721 - 2²⁷ = 8207498993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8341716701) 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, 320835246 + ... + 320835271.

It is an arithmetic number, because the mean of its divisors is an integer number (2245846813).

Almost surely, 2^8341716721 is an apocalyptic number.

It is an amenable number.

8341716721 is a deficient number, since it is larger than the sum of its proper divisors (641670531).

8341716721 is a wasteful number, since it uses less digits than its factorization.

8341716721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641670530.

The product of its digits is 56448, while the sum is 40.

The square root of 8341716721 is about 91332.9990802886. Note that the first 3 decimals coincide. The cubic root of 8341716721 is about 2028.0802967667.

The spelling of 8341716721 in words is "eight billion, three hundred forty-one million, seven hundred sixteen thousand, seven hundred twenty-one".