98697217 has 2 divisors, whose sum is σ = 98697218. Its totient is φ = 98697216.

The previous prime is 98697187. The next prime is 98697239. The reversal of 98697217 is 71279689.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59459521 + 39237696 = 7711^2 + 6264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98697217 is a prime.

It is a super-2 number, since 2×98697217² = 19482281287090178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98697317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49348608 + 49348609.

It is an arithmetic number, because the mean of its divisors is an integer number (49348609).

It is a Proth number, since it is equal to 753 ⋅ 2¹⁷ + 1 and 753 < 2¹⁷.

Almost surely, 2^98697217 is an apocalyptic number.

It is an amenable number.

98697217 is a deficient number, since it is larger than the sum of its proper divisors (1).

98697217 is an equidigital number, since it uses as much as digits as its factorization.

98697217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 98697217 is about 9934.6473012382. The cubic root of 98697217 is about 462.1344052145.

The spelling of 98697217 in words is "ninety-eight million, six hundred ninety-seven thousand, two hundred seventeen".