9806081 has 2 divisors, whose sum is σ = 9806082. Its totient is φ = 9806080.

The previous prime is 9806047. The next prime is 9806087. The reversal of 9806081 is 1806089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7789681 + 2016400 = 2791^2 + 1420^2 .

It is an emirp because it is prime and its reverse (1806089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9806081 - 2¹⁰ = 9805057 is a prime.

It is a super-2 number, since 2×9806081² = 192318449157122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9806087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4903040 + 4903041.

It is an arithmetic number, because the mean of its divisors is an integer number (4903041).

Almost surely, 2^9806081 is an apocalyptic number.

It is an amenable number.

9806081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9806081 is an equidigital number, since it uses as much as digits as its factorization.

9806081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 9806081 is about 3131.4662699764. The cubic root of 9806081 is about 214.0417495044.

The spelling of 9806081 in words is "nine million, eight hundred six thousand, eighty-one".