850204805 has 8 divisors (see below), whose sum is σ = 1020407544. Its totient is φ = 680056000.

The previous prime is 850204787. The next prime is 850204813. The reversal of 850204805 is 508402058.

It can be written as a sum of positive squares in 4 ways, for example, as 389115076 + 461089729 = 19726^2 + 21473^2 .

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

It is not a de Polignac number, because 850204805 - 2⁸ = 850204549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41855 + ... + 58755.

It is an arithmetic number, because the mean of its divisors is an integer number (127550943).

Almost surely, 2^850204805 is an apocalyptic number.

It is an amenable number.

850204805 is a deficient number, since it is larger than the sum of its proper divisors (170202739).

850204805 is a wasteful number, since it uses less digits than its factorization.

850204805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26967.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 850204805 is about 29158.2716394508. The cubic root of 850204805 is about 947.3443115748.

The spelling of 850204805 in words is "eight hundred fifty million, two hundred four thousand, eight hundred five".