6618197 has 2 divisors, whose sum is σ = 6618198. Its totient is φ = 6618196.

The previous prime is 6618191. The next prime is 6618203. The reversal of 6618197 is 7918166.

It is a balanced prime because it is at equal distance from previous prime (6618191) and next prime (6618203).

It can be written as a sum of positive squares in only one way, i.e., 6220036 + 398161 = 2494^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 6618197 - 2¹⁰ = 6617173 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6618197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6618191) 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, 3309098 + 3309099.

It is an arithmetic number, because the mean of its divisors is an integer number (3309099).

Almost surely, 2^6618197 is an apocalyptic number.

It is an amenable number.

6618197 is a deficient number, since it is larger than the sum of its proper divisors (1).

6618197 is an equidigital number, since it uses as much as digits as its factorization.

6618197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 6618197 is about 2572.5856642685. The cubic root of 6618197 is about 187.7499788712.

The spelling of 6618197 in words is "six million, six hundred eighteen thousand, one hundred ninety-seven".