195890066 has 8 divisors (see below), whose sum is σ = 294515004. Its totient is φ = 97718400.

The previous prime is 195890063. The next prime is 195890077. The reversal of 195890066 is 660098591.

195890066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 193071025 + 2819041 = 13895^2 + 1679^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 195889999 and 195890026.

It is not an unprimeable number, because it can be changed into a prime (195890063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112235 + ... + 113966.

Almost surely, 2^195890066 is an apocalyptic number.

195890066 is a deficient number, since it is larger than the sum of its proper divisors (98624938).

195890066 is a wasteful number, since it uses less digits than its factorization.

195890066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226636.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 195890066 is about 13996.0732350185. The cubic root of 195890066 is about 580.7699504858.

The spelling of 195890066 in words is "one hundred ninety-five million, eight hundred ninety thousand, sixty-six".