196940647 has 2 divisors, whose sum is σ = 196940648. Its totient is φ = 196940646.

The previous prime is 196940617. The next prime is 196940683. The reversal of 196940647 is 746049691.

It is a weak prime.

It is an emirp because it is prime and its reverse (746049691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196940647 - 2⁷ = 196940519 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 196940597 and 196940606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196940617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98470323 + 98470324.

It is an arithmetic number, because the mean of its divisors is an integer number (98470324).

Almost surely, 2^196940647 is an apocalyptic number.

196940647 is a deficient number, since it is larger than the sum of its proper divisors (1).

196940647 is an equidigital number, since it uses as much as digits as its factorization.

196940647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 196940647 is about 14033.5543252592. The cubic root of 196940647 is about 581.8063453121.

The spelling of 196940647 in words is "one hundred ninety-six million, nine hundred forty thousand, six hundred forty-seven".