30666197 has 2 divisors, whose sum is σ = 30666198. Its totient is φ = 30666196.

The previous prime is 30666187. The next prime is 30666221. The reversal of 30666197 is 79166603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28313041 + 2353156 = 5321^2 + 1534^2 .

It is a cyclic number.

It is not a de Polignac number, because 30666197 - 2⁸ = 30665941 is a prime.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 30666197 parts by 7831 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 30666197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30666127) 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, 15333098 + 15333099.

It is an arithmetic number, because the mean of its divisors is an integer number (15333099).

Almost surely, 2^30666197 is an apocalyptic number.

It is an amenable number.

30666197 is a deficient number, since it is larger than the sum of its proper divisors (1).

30666197 is an equidigital number, since it uses as much as digits as its factorization.

30666197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 30666197 is about 5537.7068358663. The cubic root of 30666197 is about 313.0064644965.

The spelling of 30666197 in words is "thirty million, six hundred sixty-six thousand, one hundred ninety-seven".