850441565 has 8 divisors (see below), whose sum is σ = 1037260248. Its totient is φ = 669199680.

The previous prime is 850441499. The next prime is 850441567. The reversal of 850441565 is 565144058.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19321 + 850422244 = 139^2 + 29162^2 .

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

It is not a de Polignac number, because 850441565 - 2⁸ = 850441309 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 (850441567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393862 + ... + 1394471.

It is an arithmetic number, because the mean of its divisors is an integer number (129657531).

Almost surely, 2^850441565 is an apocalyptic number.

It is an amenable number.

850441565 is a deficient number, since it is larger than the sum of its proper divisors (186818683).

850441565 is a wasteful number, since it uses less digits than its factorization.

850441565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788399.

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 850441565 is about 29162.3312682645. The cubic root of 850441565 is about 947.4322403582.

The spelling of 850441565 in words is "eight hundred fifty million, four hundred forty-one thousand, five hundred sixty-five".