195806605 has 8 divisors (see below), whose sum is σ = 237249792. Its totient is φ = 155124048.

The previous prime is 195806587. The next prime is 195806623. The reversal of 195806605 is 506608591.

It is an interprime number because it is at equal distance from previous prime (195806587) and next prime (195806623).

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 195806605 - 2¹⁷ = 195675533 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189589 + ... + 190618.

It is an arithmetic number, because the mean of its divisors is an integer number (29656224).

Almost surely, 2^195806605 is an apocalyptic number.

It is an amenable number.

195806605 is a deficient number, since it is larger than the sum of its proper divisors (41443187).

195806605 is a wasteful number, since it uses less digits than its factorization.

195806605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380315.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 195806605 is about 13993.0913310819. The cubic root of 195806605 is about 580.6874577431.

The spelling of 195806605 in words is "one hundred ninety-five million, eight hundred six thousand, six hundred five".