196662769 has 2 divisors, whose sum is σ = 196662770. Its totient is φ = 196662768.

The previous prime is 196662737. The next prime is 196662821. The reversal of 196662769 is 967266691.

It is an a-pointer prime, because the next prime (196662821) can be obtained adding 196662769 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178489600 + 18173169 = 13360^2 + 4263^2 .

It is a cyclic number.

It is not a de Polignac number, because 196662769 - 2⁵ = 196662737 is a prime.

It is a super-2 number, since 2×196662769² = 77352489421494722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (196642769) 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, 98331384 + 98331385.

It is an arithmetic number, because the mean of its divisors is an integer number (98331385).

Almost surely, 2^196662769 is an apocalyptic number.

It is an amenable number.

196662769 is a deficient number, since it is larger than the sum of its proper divisors (1).

196662769 is an equidigital number, since it uses as much as digits as its factorization.

196662769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 196662769 is about 14023.6503450421. The cubic root of 196662769 is about 581.5325787677.

The spelling of 196662769 in words is "one hundred ninety-six million, six hundred sixty-two thousand, seven hundred sixty-nine".