98806661 has 2 divisors, whose sum is σ = 98806662. Its totient is φ = 98806660.

The previous prime is 98806649. The next prime is 98806667. The reversal of 98806661 is 16660889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93993025 + 4813636 = 9695^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 98806661 - 2¹⁴ = 98790277 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98806667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49403330 + 49403331.

It is an arithmetic number, because the mean of its divisors is an integer number (49403331).

Almost surely, 2^98806661 is an apocalyptic number.

It is an amenable number.

98806661 is a deficient number, since it is larger than the sum of its proper divisors (1).

98806661 is an equidigital number, since it uses as much as digits as its factorization.

98806661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 98806661 is about 9940.1539726505. The cubic root of 98806661 is about 462.3051602971.

The spelling of 98806661 in words is "ninety-eight million, eight hundred six thousand, six hundred sixty-one".