99630197 has 2 divisors, whose sum is σ = 99630198. Its totient is φ = 99630196.

The previous prime is 99630143. The next prime is 99630221. The reversal of 99630197 is 79103699.

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., 98922916 + 707281 = 9946^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 99630197 - 2⁸ = 99629941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99630107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49815098 + 49815099.

It is an arithmetic number, because the mean of its divisors is an integer number (49815099).

Almost surely, 2^99630197 is an apocalyptic number.

It is an amenable number.

99630197 is a deficient number, since it is larger than the sum of its proper divisors (1).

99630197 is an equidigital number, since it uses as much as digits as its factorization.

99630197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 99630197 is about 9981.4927240368. The cubic root of 99630197 is about 463.5860187980.

The spelling of 99630197 in words is "ninety-nine million, six hundred thirty thousand, one hundred ninety-seven".