196775729 has 2 divisors, whose sum is σ = 196775730. Its totient is φ = 196775728.

The previous prime is 196775713. The next prime is 196775737. The reversal of 196775729 is 927577691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160149025 + 36626704 = 12655^2 + 6052^2 .

It is a cyclic number.

It is not a de Polignac number, because 196775729 - 2⁴ = 196775713 is a prime.

It is not a weakly prime, because it can be changed into another prime (196975729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98387864 + 98387865.

It is an arithmetic number, because the mean of its divisors is an integer number (98387865).

Almost surely, 2^196775729 is an apocalyptic number.

It is an amenable number.

196775729 is a deficient number, since it is larger than the sum of its proper divisors (1).

196775729 is an equidigital number, since it uses as much as digits as its factorization.

196775729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666980, while the sum is 53.

The square root of 196775729 is about 14027.6772489247. The cubic root of 196775729 is about 581.6438985112.

The spelling of 196775729 in words is "one hundred ninety-six million, seven hundred seventy-five thousand, seven hundred twenty-nine".