99607217 has 2 divisors, whose sum is σ = 99607218. Its totient is φ = 99607216.

The previous prime is 99607201. The next prime is 99607271. The reversal of 99607217 is 71270699.

It is a happy number.

Together with next prime (99607271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57214096 + 42393121 = 7564^2 + 6511^2 .

It is an emirp because it is prime and its reverse (71270699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99607217 - 2⁴ = 99607201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99601217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49803608 + 49803609.

It is an arithmetic number, because the mean of its divisors is an integer number (49803609).

Almost surely, 2^99607217 is an apocalyptic number.

It is an amenable number.

99607217 is a deficient number, since it is larger than the sum of its proper divisors (1).

99607217 is an equidigital number, since it uses as much as digits as its factorization.

99607217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 99607217 is about 9980.3415272224. The cubic root of 99607217 is about 463.5503735612.

The spelling of 99607217 in words is "ninety-nine million, six hundred seven thousand, two hundred seventeen".