196688702017 has 4 divisors (see below), whose sum is σ = 197317100740. Its totient is φ = 196060303296.

The previous prime is 196688701901. The next prime is 196688702029. The reversal of 196688702017 is 710207886691.

It is a Cunningham number, because it is equal to 443496²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710207886691 = 359 ⋅1978294949.

It can be written as a sum of positive squares in 2 ways, for example, as 1254859776 + 195433842241 = 35424^2 + 442079^2 .

It is a cyclic number.

It is not a de Polignac number, because 196688702017 - 2³⁵ = 162328963649 is a prime.

It is a super-2 number, since 2×196688702017² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196688703017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314198892 + ... + 314199517.

It is an arithmetic number, because the mean of its divisors is an integer number (49329275185).

Almost surely, 2^196688702017 is an apocalyptic number.

It is an amenable number.

196688702017 is a deficient number, since it is larger than the sum of its proper divisors (628398723).

196688702017 is an equidigital number, since it uses as much as digits as its factorization.

196688702017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628398722.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 196688702017 in words is "one hundred ninety-six billion, six hundred eighty-eight million, seven hundred two thousand, seventeen".