641916606 has 8 divisors (see below), whose sum is σ = 1283833224. Its totient is φ = 213972200.

The previous prime is 641916601. The next prime is 641916643. The reversal of 641916606 is 606619146.

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

641916606 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641916601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53493045 + ... + 53493056.

It is an arithmetic number, because the mean of its divisors is an integer number (160479153).

Almost surely, 2^641916606 is an apocalyptic number.

641916606 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.

641916606 is a wasteful number, since it uses less digits than its factorization.

641916606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106986106.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 641916606 is about 25336.0732158715. The cubic root of 641916606 is about 862.6332692199.

The spelling of 641916606 in words is "six hundred forty-one million, nine hundred sixteen thousand, six hundred six".