197009563 has 2 divisors, whose sum is σ = 197009564. Its totient is φ = 197009562.

The previous prime is 197009521. The next prime is 197009567. The reversal of 197009563 is 365900791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197009563 - 2¹⁷ = 196878491 is a prime.

It is not a weakly prime, because it can be changed into another prime (197009567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98504781 + 98504782.

It is an arithmetic number, because the mean of its divisors is an integer number (98504782).

Almost surely, 2^197009563 is an apocalyptic number.

197009563 is a deficient number, since it is larger than the sum of its proper divisors (1).

197009563 is an equidigital number, since it uses as much as digits as its factorization.

197009563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 197009563 is about 14036.0095112535. The cubic root of 197009563 is about 581.8742017800.

The spelling of 197009563 in words is "one hundred ninety-seven million, nine thousand, five hundred sixty-three".