195681606 has 8 divisors (see below), whose sum is σ = 391363224. Its totient is φ = 65227200.

The previous prime is 195681593. The next prime is 195681613. The reversal of 195681606 is 606186591.

It is a happy number.

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

195681606 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16306795 + ... + 16306806.

It is an arithmetic number, because the mean of its divisors is an integer number (48920403).

Almost surely, 2^195681606 is an apocalyptic number.

195681606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

195681606 is a wasteful number, since it uses less digits than its factorization.

195681606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32613606.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 195681606 is about 13988.6241639412. The cubic root of 195681606 is about 580.5638650402.

The spelling of 195681606 in words is "one hundred ninety-five million, six hundred eighty-one thousand, six hundred six".