9800657 has 2 divisors, whose sum is σ = 9800658. Its totient is φ = 9800656.

The previous prime is 9800641. The next prime is 9800663. The reversal of 9800657 is 7560089.

9800657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6270016 + 3530641 = 2504^2 + 1879^2 .

It is a cyclic number.

It is not a de Polignac number, because 9800657 - 2⁴ = 9800641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9800617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900328 + 4900329.

It is an arithmetic number, because the mean of its divisors is an integer number (4900329).

Almost surely, 2^9800657 is an apocalyptic number.

It is an amenable number.

9800657 is a deficient number, since it is larger than the sum of its proper divisors (1).

9800657 is an equidigital number, since it uses as much as digits as its factorization.

9800657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 9800657 is about 3130.6001022168. The cubic root of 9800657 is about 214.0022781951.

The spelling of 9800657 in words is "nine million, eight hundred thousand, six hundred fifty-seven".