9800061797 has 2 divisors, whose sum is σ = 9800061798. Its totient is φ = 9800061796.

The previous prime is 9800061787. The next prime is 9800061809. The reversal of 9800061797 is 7971600089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8178308356 + 1621753441 = 90434^2 + 40271^2 .

It is a cyclic number.

It is not a de Polignac number, because 9800061797 - 2²² = 9795867493 is a prime.

It is a super-2 number, since 2×9800061797² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9800061787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900030898 + 4900030899.

It is an arithmetic number, because the mean of its divisors is an integer number (4900030899).

Almost surely, 2^9800061797 is an apocalyptic number.

It is an amenable number.

9800061797 is a deficient number, since it is larger than the sum of its proper divisors (1).

9800061797 is an equidigital number, since it uses as much as digits as its factorization.

9800061797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 9800061797 is about 98995.2614876086. The cubic root of 9800061797 is about 2139.9794592171.

The spelling of 9800061797 in words is "nine billion, eight hundred million, sixty-one thousand, seven hundred ninety-seven".