195065866 has 8 divisors (see below), whose sum is σ = 292901220. Its totient is φ = 97432128.

The previous prime is 195065863. The next prime is 195065879. The reversal of 195065866 is 668560591.

It can be written as a sum of positive squares in 2 ways, for example, as 175960225 + 19105641 = 13265^2 + 4371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (195065863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47961 + ... + 51868.

Almost surely, 2^195065866 is an apocalyptic number.

195065866 is a deficient number, since it is larger than the sum of its proper divisors (97835354).

195065866 is an equidigital number, since it uses as much as digits as its factorization.

195065866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100808.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 195065866 is about 13966.5982257671. The cubic root of 195065866 is about 579.9542829602.

The spelling of 195065866 in words is "one hundred ninety-five million, sixty-five thousand, eight hundred sixty-six".