196669717 has 2 divisors, whose sum is σ = 196669718. Its totient is φ = 196669716.

The previous prime is 196669709. The next prime is 196669777. The reversal of 196669717 is 717966691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138086001 + 58583716 = 11751^2 + 7654^2 .

It is a cyclic number.

It is not a de Polignac number, because 196669717 - 2³ = 196669709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196669777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98334858 + 98334859.

It is an arithmetic number, because the mean of its divisors is an integer number (98334859).

Almost surely, 2^196669717 is an apocalyptic number.

It is an amenable number.

196669717 is a deficient number, since it is larger than the sum of its proper divisors (1).

196669717 is an equidigital number, since it uses as much as digits as its factorization.

196669717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 196669717 is about 14023.8980672280. The cubic root of 196669717 is about 581.5394271081.

The spelling of 196669717 in words is "one hundred ninety-six million, six hundred sixty-nine thousand, seven hundred seventeen".