98621617 has 2 divisors, whose sum is σ = 98621618. Its totient is φ = 98621616.

The previous prime is 98621597. The next prime is 98621629. The reversal of 98621617 is 71612689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83247376 + 15374241 = 9124^2 + 3921^2 .

It is an emirp because it is prime and its reverse (71612689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98621617 - 2¹⁵ = 98588849 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 98621617.

It is not a weakly prime, because it can be changed into another prime (98621657) 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, 49310808 + 49310809.

It is an arithmetic number, because the mean of its divisors is an integer number (49310809).

Almost surely, 2^98621617 is an apocalyptic number.

It is an amenable number.

98621617 is a deficient number, since it is larger than the sum of its proper divisors (1).

98621617 is an equidigital number, since it uses as much as digits as its factorization.

98621617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 98621617 is about 9930.8417065222. The cubic root of 98621617 is about 462.0163799843.

The spelling of 98621617 in words is "ninety-eight million, six hundred twenty-one thousand, six hundred seventeen".