98690689 has 2 divisors, whose sum is σ = 98690690. Its totient is φ = 98690688.

The previous prime is 98690687. The next prime is 98690749. The reversal of 98690689 is 98609689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 9199089 = 9460^2 + 3033^2 .

It is an emirp because it is prime and its reverse (98609689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98690689 - 2¹ = 98690687 is a prime.

Together with 98690687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (98690687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49345344 + 49345345.

It is an arithmetic number, because the mean of its divisors is an integer number (49345345).

Almost surely, 2^98690689 is an apocalyptic number.

It is an amenable number.

98690689 is a deficient number, since it is larger than the sum of its proper divisors (1).

98690689 is an equidigital number, since it uses as much as digits as its factorization.

98690689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 98690689 is about 9934.3187486611. The cubic root of 98690689 is about 462.1242162075.

The spelling of 98690689 in words is "ninety-eight million, six hundred ninety thousand, six hundred eighty-nine".