98566649 has 2 divisors, whose sum is σ = 98566650. Its totient is φ = 98566648.

The previous prime is 98566619. The next prime is 98566687. The reversal of 98566649 is 94666589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 43138624 = 7445^2 + 6568^2 .

It is a cyclic number.

It is not a de Polignac number, because 98566649 - 2¹⁶ = 98501113 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98566649.

It is not a weakly prime, because it can be changed into another prime (98566619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49283324 + 49283325.

It is an arithmetic number, because the mean of its divisors is an integer number (49283325).

Almost surely, 2^98566649 is an apocalyptic number.

It is an amenable number.

98566649 is a deficient number, since it is larger than the sum of its proper divisors (1).

98566649 is an equidigital number, since it uses as much as digits as its factorization.

98566649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 53.

The square root of 98566649 is about 9928.0737809507. The cubic root of 98566649 is about 461.9305271497.

It can be divided in two parts, 9 and 8566649, that added together give a palindrome (8566658).

The spelling of 98566649 in words is "ninety-eight million, five hundred sixty-six thousand, six hundred forty-nine".