98784661 has 2 divisors, whose sum is σ = 98784662. Its totient is φ = 98784660.

The previous prime is 98784593. The next prime is 98784677. The reversal of 98784661 is 16648789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83722500 + 15062161 = 9150^2 + 3881^2 .

It is a cyclic number.

It is not a de Polignac number, because 98784661 - 2⁷ = 98784533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98784461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49392330 + 49392331.

It is an arithmetic number, because the mean of its divisors is an integer number (49392331).

Almost surely, 2^98784661 is an apocalyptic number.

It is an amenable number.

98784661 is a deficient number, since it is larger than the sum of its proper divisors (1).

98784661 is an equidigital number, since it uses as much as digits as its factorization.

98784661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 98784661 is about 9939.0472883471. The cubic root of 98784661 is about 462.2708459153.

The spelling of 98784661 in words is "ninety-eight million, seven hundred eighty-four thousand, six hundred sixty-one".