99664297 has 2 divisors, whose sum is σ = 99664298. Its totient is φ = 99664296.

The previous prime is 99664289. The next prime is 99664303. The reversal of 99664297 is 79246699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90079081 + 9585216 = 9491^2 + 3096^2 .

It is a cyclic number.

It is not a de Polignac number, because 99664297 - 2³ = 99664289 is a prime.

It is not a weakly prime, because it can be changed into another prime (99664277) 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, 49832148 + 49832149.

It is an arithmetic number, because the mean of its divisors is an integer number (49832149).

Almost surely, 2^99664297 is an apocalyptic number.

It is an amenable number.

99664297 is a deficient number, since it is larger than the sum of its proper divisors (1).

99664297 is an equidigital number, since it uses as much as digits as its factorization.

99664297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 99664297 is about 9983.2007392419. The cubic root of 99664297 is about 463.6389026308.

The spelling of 99664297 in words is "ninety-nine million, six hundred sixty-four thousand, two hundred ninety-seven".