197695613 has 2 divisors, whose sum is σ = 197695614. Its totient is φ = 197695612.

The previous prime is 197695591. The next prime is 197695633. The reversal of 197695613 is 316596791.

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., 195496324 + 2199289 = 13982^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 197695613 - 2⁶ = 197695549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197695633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98847806 + 98847807.

It is an arithmetic number, because the mean of its divisors is an integer number (98847807).

Almost surely, 2^197695613 is an apocalyptic number.

It is an amenable number.

197695613 is a deficient number, since it is larger than the sum of its proper divisors (1).

197695613 is an equidigital number, since it uses as much as digits as its factorization.

197695613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 197695613 is about 14060.4271983464. The cubic root of 197695613 is about 582.5488430005.

The spelling of 197695613 in words is "one hundred ninety-seven million, six hundred ninety-five thousand, six hundred thirteen".