197663017 has 2 divisors, whose sum is σ = 197663018. Its totient is φ = 197663016.

The previous prime is 197663003. The next prime is 197663027. The reversal of 197663017 is 710366791.

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., 196308121 + 1354896 = 14011^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 197663017 - 2¹⁵ = 197630249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197663027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98831508 + 98831509.

It is an arithmetic number, because the mean of its divisors is an integer number (98831509).

Almost surely, 2^197663017 is an apocalyptic number.

It is an amenable number.

197663017 is a deficient number, since it is larger than the sum of its proper divisors (1).

197663017 is an equidigital number, since it uses as much as digits as its factorization.

197663017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 197663017 is about 14059.2680108176. The cubic root of 197663017 is about 582.5168244080.

The spelling of 197663017 in words is "one hundred ninety-seven million, six hundred sixty-three thousand, seventeen".