8721761323 has 8 divisors (see below), whose sum is σ = 9771801840. Its totient is φ = 7714579680.

The previous prime is 8721761287. The next prime is 8721761329. The reversal of 8721761323 is 3231671278.

It is a happy number.

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 8721761323 - 2⁹ = 8721760811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8721761329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10714288 + ... + 10715101.

It is an arithmetic number, because the mean of its divisors is an integer number (1221475230).

Almost surely, 2^8721761323 is an apocalyptic number.

8721761323 is a deficient number, since it is larger than the sum of its proper divisors (1050040517).

8721761323 is a wasteful number, since it uses less digits than its factorization.

8721761323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21429437.

The product of its digits is 84672, while the sum is 40.

The square root of 8721761323 is about 93390.3706117499. The cubic root of 8721761323 is about 2058.4235057934.

The spelling of 8721761323 in words is "eight billion, seven hundred twenty-one million, seven hundred sixty-one thousand, three hundred twenty-three".