9866773061 has 2 divisors, whose sum is σ = 9866773062. Its totient is φ = 9866773060.

The previous prime is 9866773057. The next prime is 9866773073. The reversal of 9866773061 is 1603776689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7942196161 + 1924576900 = 89119^2 + 43870^2 .

It is a cyclic number.

It is not a de Polignac number, because 9866773061 - 2² = 9866773057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9866772994 and 9866773012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9866773051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933386530 + 4933386531.

It is an arithmetic number, because the mean of its divisors is an integer number (4933386531).

Almost surely, 2^9866773061 is an apocalyptic number.

It is an amenable number.

9866773061 is a deficient number, since it is larger than the sum of its proper divisors (1).

9866773061 is an equidigital number, since it uses as much as digits as its factorization.

9866773061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 9866773061 is about 99331.6317242398. The cubic root of 9866773061 is about 2144.8242592510.

The spelling of 9866773061 in words is "nine billion, eight hundred sixty-six million, seven hundred seventy-three thousand, sixty-one".