8960020649 has 6 divisors (see below), whose sum is σ = 9179178666. Its totient is φ = 8740892240.

The previous prime is 8960020637. The next prime is 8960020651. The reversal of 8960020649 is 9460200698.

It can be written as a sum of positive squares in only one way, i.e., 5463427225 + 3496593424 = 73915^2 + 59132^2 .

It is not a de Polignac number, because 8960020649 - 2⁴ = 8960020633 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8960020609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 598712 + ... + 613494.

It is an arithmetic number, because the mean of its divisors is an integer number (1529863111).

Almost surely, 2^8960020649 is an apocalyptic number.

It is an amenable number.

8960020649 is a deficient number, since it is larger than the sum of its proper divisors (219158017).

8960020649 is an frugal number, since it uses more digits than its factorization.

8960020649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29607 (or 14824 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 8960020649 is about 94657.3856019698. The cubic root of 8960020649 is about 2076.9992362721. Note that the first 3 decimals are identical.

The spelling of 8960020649 in words is "eight billion, nine hundred sixty million, twenty thousand, six hundred forty-nine".