8740275721 has 8 divisors (see below), whose sum is σ = 8814165984. Its totient is φ = 8666532000.

The previous prime is 8740275707. The next prime is 8740275787. The reversal of 8740275721 is 1275720478.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8740275721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8740275821) 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, 84846 + ... + 157096.

It is an arithmetic number, because the mean of its divisors is an integer number (1101770748).

Almost surely, 2^8740275721 is an apocalyptic number.

It is an amenable number.

8740275721 is a deficient number, since it is larger than the sum of its proper divisors (73890263).

8740275721 is a wasteful number, since it uses less digits than its factorization.

8740275721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73271.

The product of its (nonzero) digits is 219520, while the sum is 43.

The square root of 8740275721 is about 93489.4417621584. The cubic root of 8740275721 is about 2059.8790045030.

The spelling of 8740275721 in words is "eight billion, seven hundred forty million, two hundred seventy-five thousand, seven hundred twenty-one".