196657057 has 2 divisors, whose sum is σ = 196657058. Its totient is φ = 196657056.

The previous prime is 196657039. The next prime is 196657063. The reversal of 196657057 is 750756691.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106007616 + 90649441 = 10296^2 + 9521^2 .

It is an emirp because it is prime and its reverse (750756691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196657057 - 2¹¹ = 196655009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 196656998 and 196657016.

It is not a weakly prime, because it can be changed into another prime (196657067) 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, 98328528 + 98328529.

It is an arithmetic number, because the mean of its divisors is an integer number (98328529).

Almost surely, 2^196657057 is an apocalyptic number.

It is an amenable number.

196657057 is a deficient number, since it is larger than the sum of its proper divisors (1).

196657057 is an equidigital number, since it uses as much as digits as its factorization.

196657057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 196657057 is about 14023.4466876014. The cubic root of 196657057 is about 581.5269485777.

The spelling of 196657057 in words is "one hundred ninety-six million, six hundred fifty-seven thousand, fifty-seven".