196328777 has 2 divisors, whose sum is σ = 196328778. Its totient is φ = 196328776.

The previous prime is 196328747. The next prime is 196328779. The reversal of 196328777 is 777823691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176650681 + 19678096 = 13291^2 + 4436^2 .

It is a cyclic number.

It is not a de Polignac number, because 196328777 - 2¹⁰ = 196327753 is a prime.

Together with 196328779, 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 (196328779) 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, 98164388 + 98164389.

It is an arithmetic number, because the mean of its divisors is an integer number (98164389).

Almost surely, 2^196328777 is an apocalyptic number.

It is an amenable number.

196328777 is a deficient number, since it is larger than the sum of its proper divisors (1).

196328777 is an equidigital number, since it uses as much as digits as its factorization.

196328777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 50.

The square root of 196328777 is about 14011.7371157184. The cubic root of 196328777 is about 581.2031870111.

The spelling of 196328777 in words is "one hundred ninety-six million, three hundred twenty-eight thousand, seven hundred seventy-seven".