850206661 has 8 divisors (see below), whose sum is σ = 933865920. Its totient is φ = 770438592.

The previous prime is 850206647. The next prime is 850206667. The reversal of 850206661 is 166602058.

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 850206661 - 2¹¹ = 850204613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850206667) 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 7 ways as a sum of consecutive naturals, for example, 972340 + ... + 973213.

It is an arithmetic number, because the mean of its divisors is an integer number (116733240).

Almost surely, 2^850206661 is an apocalyptic number.

It is an amenable number.

850206661 is a deficient number, since it is larger than the sum of its proper divisors (83659259).

850206661 is a wasteful number, since it uses less digits than its factorization.

850206661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945595.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 850206661 is about 29158.3034657368. The cubic root of 850206661 is about 947.3450009263.

The spelling of 850206661 in words is "eight hundred fifty million, two hundred six thousand, six hundred sixty-one".