197677147 has 2 divisors, whose sum is σ = 197677148. Its totient is φ = 197677146.

The previous prime is 197677141. The next prime is 197677171. The reversal of 197677147 is 741776791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197677147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197677147.

It is not a weakly prime, because it can be changed into another prime (197677141) 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, 98838573 + 98838574.

It is an arithmetic number, because the mean of its divisors is an integer number (98838574).

Almost surely, 2^197677147 is an apocalyptic number.

197677147 is a deficient number, since it is larger than the sum of its proper divisors (1).

197677147 is an equidigital number, since it uses as much as digits as its factorization.

197677147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518616, while the sum is 49.

The square root of 197677147 is about 14059.7705173306. The cubic root of 197677147 is about 582.5307045405.

The spelling of 197677147 in words is "one hundred ninety-seven million, six hundred seventy-seven thousand, one hundred forty-seven".