195065856 has 144 divisors (see below), whose sum is σ = 594102600. Its totient is φ = 61489152.

The previous prime is 195065851. The next prime is 195065863. The reversal of 195065856 is 658560591.

It is a happy number.

195065856 is a `hidden beast` number, since 19 + 50 + 6 + 585 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195065851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349930 + ... + 350486.

Almost surely, 2^195065856 is an apocalyptic number.

195065856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195065856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297051300).

195065856 is an abundant number, since it is smaller than the sum of its proper divisors (399036744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195065856 is a wasteful number, since it uses less digits than its factorization.

195065856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 195065856 is about 13966.5978677701. The cubic root of 195065856 is about 579.9542730498.

The spelling of 195065856 in words is "one hundred ninety-five million, sixty-five thousand, eight hundred fifty-six".