8697728443 has 4 divisors (see below), whose sum is σ = 8698165560. Its totient is φ = 8697291328.

The previous prime is 8697728437. The next prime is 8697728467. The reversal of 8697728443 is 3448277968.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8697728443 - 2⁹ = 8697727931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8697728483) 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, 187213 + ... + 229006.

It is an arithmetic number, because the mean of its divisors is an integer number (2174541390).

Almost surely, 2^8697728443 is an apocalyptic number.

8697728443 is a deficient number, since it is larger than the sum of its proper divisors (437117).

8697728443 is a wasteful number, since it uses less digits than its factorization.

8697728443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437116.

The product of its digits is 16257024, while the sum is 58.

The square root of 8697728443 is about 93261.6129122803. The cubic root of 8697728443 is about 2056.5310993120.

The spelling of 8697728443 in words is "eight billion, six hundred ninety-seven million, seven hundred twenty-eight thousand, four hundred forty-three".