8890063561 has 2 divisors, whose sum is σ = 8890063562. Its totient is φ = 8890063560.

The previous prime is 8890063493. The next prime is 8890063601. The reversal of 8890063561 is 1653600988.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8687172025 + 202891536 = 93205^2 + 14244^2 .

It is a cyclic number.

It is not a de Polignac number, because 8890063561 - 2¹¹ = 8890061513 is a prime.

It is not a weakly prime, because it can be changed into another prime (8890067561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4445031780 + 4445031781.

It is an arithmetic number, because the mean of its divisors is an integer number (4445031781).

Almost surely, 2^8890063561 is an apocalyptic number.

It is an amenable number.

8890063561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8890063561 is an equidigital number, since it uses as much as digits as its factorization.

8890063561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 8890063561 is about 94287.1335920230. The cubic root of 8890063561 is about 2071.5795827675.

The spelling of 8890063561 in words is "eight billion, eight hundred ninety million, sixty-three thousand, five hundred sixty-one".