195665063 has 8 divisors (see below), whose sum is σ = 217071360. Its totient is φ = 174861880.

The previous prime is 195665047. The next prime is 195665081. The reversal of 195665063 is 360566591.

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

It is a cyclic number.

It is not a de Polignac number, because 195665063 - 2⁴ = 195665047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195665063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195665963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150095 + ... + 151392.

It is an arithmetic number, because the mean of its divisors is an integer number (27133920).

Almost surely, 2^195665063 is an apocalyptic number.

195665063 is a deficient number, since it is larger than the sum of its proper divisors (21406297).

195665063 is a wasteful number, since it uses less digits than its factorization.

195665063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301557.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 195665063 is about 13988.0328495468. The cubic root of 195665063 is about 580.5475042132.

The spelling of 195665063 in words is "one hundred ninety-five million, six hundred sixty-five thousand, sixty-three".