9628714521 has 6 divisors (see below), whose sum is σ = 13908143210. Its totient is φ = 6419143008.

The previous prime is 9628714463. The next prime is 9628714523. The reversal of 9628714521 is 1254178269.

9628714521 is a `hidden beast` number, since 9 + 628 + 7 + 14 + 5 + 2 + 1 = 666.

9628714521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7575265296 + 2053449225 = 87036^2 + 45315^2 .

It is not a de Polignac number, because 9628714521 - 2¹⁹ = 9628190233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9628714523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 534928576 + ... + 534928593.

Almost surely, 2^9628714521 is an apocalyptic number.

It is an amenable number.

9628714521 is a deficient number, since it is larger than the sum of its proper divisors (4279428689).

9628714521 is a wasteful number, since it uses less digits than its factorization.

9628714521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069857175 (or 1069857172 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 9628714521 is about 98126.0134775687. The cubic root of 9628714521 is about 2127.4340383019.

The spelling of 9628714521 in words is "nine billion, six hundred twenty-eight million, seven hundred fourteen thousand, five hundred twenty-one".