196765861 has 2 divisors, whose sum is σ = 196765862. Its totient is φ = 196765860.

The previous prime is 196765813. The next prime is 196765909. The reversal of 196765861 is 168567691.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (196765813) and next prime (196765909).

It can be written as a sum of positive squares in only one way, i.e., 139476100 + 57289761 = 11810^2 + 7569^2 .

It is a cyclic number.

It is not a de Polignac number, because 196765861 - 2¹³ = 196757669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196765061) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98382930 + 98382931.

It is an arithmetic number, because the mean of its divisors is an integer number (98382931).

Almost surely, 2^196765861 is an apocalyptic number.

It is an amenable number.

196765861 is a deficient number, since it is larger than the sum of its proper divisors (1).

196765861 is an equidigital number, since it uses as much as digits as its factorization.

196765861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 196765861 is about 14027.3255113011. The cubic root of 196765861 is about 581.6341754998.

The spelling of 196765861 in words is "one hundred ninety-six million, seven hundred sixty-five thousand, eight hundred sixty-one".