197966147 has 2 divisors, whose sum is σ = 197966148. Its totient is φ = 197966146.

The previous prime is 197966137. The next prime is 197966239. The reversal of 197966147 is 741669791.

It is a weak prime.

It is an emirp because it is prime and its reverse (741669791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197966147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197966095 and 197966104.

It is not a weakly prime, because it can be changed into another prime (197966137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98983073 + 98983074.

It is an arithmetic number, because the mean of its divisors is an integer number (98983074).

Almost surely, 2^197966147 is an apocalyptic number.

197966147 is a deficient number, since it is larger than the sum of its proper divisors (1).

197966147 is an equidigital number, since it uses as much as digits as its factorization.

197966147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 50.

The square root of 197966147 is about 14070.0443140738. The cubic root of 197966147 is about 582.8144490209.

The spelling of 197966147 in words is "one hundred ninety-seven million, nine hundred sixty-six thousand, one hundred forty-seven".