197610617 has 2 divisors, whose sum is σ = 197610618. Its totient is φ = 197610616.

The previous prime is 197610593. The next prime is 197610619. The reversal of 197610617 is 716016791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153041641 + 44568976 = 12371^2 + 6676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197610617 is a prime.

It is a super-2 number, since 2×197610617² = 78099911902241378, which contains 22 as substring.

Together with 197610619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197610619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98805308 + 98805309.

It is an arithmetic number, because the mean of its divisors is an integer number (98805309).

Almost surely, 2^197610617 is an apocalyptic number.

It is an amenable number.

197610617 is a deficient number, since it is larger than the sum of its proper divisors (1).

197610617 is an equidigital number, since it uses as much as digits as its factorization.

197610617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 197610617 is about 14057.4043478873. The cubic root of 197610617 is about 582.4653452462.

The spelling of 197610617 in words is "one hundred ninety-seven million, six hundred ten thousand, six hundred seventeen".