99598517 has 2 divisors, whose sum is σ = 99598518. Its totient is φ = 99598516.

The previous prime is 99598507. The next prime is 99598519. The reversal of 99598517 is 71589599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99221521 + 376996 = 9961^2 + 614^2 .

It is an emirp because it is prime and its reverse (71589599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99598517 - 2¹⁸ = 99336373 is a prime.

Together with 99598519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99598519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49799258 + 49799259.

It is an arithmetic number, because the mean of its divisors is an integer number (49799259).

Almost surely, 2^99598517 is an apocalyptic number.

It is an amenable number.

99598517 is a deficient number, since it is larger than the sum of its proper divisors (1).

99598517 is an equidigital number, since it uses as much as digits as its factorization.

99598517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 53.

The square root of 99598517 is about 9979.9056608768. The cubic root of 99598517 is about 463.5368771976.

The spelling of 99598517 in words is "ninety-nine million, five hundred ninety-eight thousand, five hundred seventeen".