9800590561 has 2 divisors, whose sum is σ = 9800590562. Its totient is φ = 9800590560.

The previous prime is 9800590549. The next prime is 9800590603. The reversal of 9800590561 is 1650950089.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9402986961 + 397603600 = 96969^2 + 19940^2 .

It is a cyclic number.

It is not a de Polignac number, because 9800590561 - 2⁷ = 9800590433 is a prime.

It is not a weakly prime, because it can be changed into another prime (9800590061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900295280 + 4900295281.

It is an arithmetic number, because the mean of its divisors is an integer number (4900295281).

Almost surely, 2^9800590561 is an apocalyptic number.

It is an amenable number.

9800590561 is a deficient number, since it is larger than the sum of its proper divisors (1).

9800590561 is an equidigital number, since it uses as much as digits as its factorization.

9800590561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 9800590561 is about 98997.9321046657. The cubic root of 9800590561 is about 2140.0179461767.

The spelling of 9800590561 in words is "nine billion, eight hundred million, five hundred ninety thousand, five hundred sixty-one".