850385 has 8 divisors (see below), whose sum is σ = 1040040. Its totient is φ = 667264.

The previous prime is 850373. The next prime is 850387. The reversal of 850385 is 583058.

It can be written as a sum of positive squares in 4 ways, for example, as 173056 + 677329 = 416^2 + 823^2 .

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 850385 - 2¹⁸ = 588241 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 850385.

It is not an unprimeable number, because it can be changed into a prime (850387) 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, 1340 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (130005).

2⁸⁵⁰³⁸⁵ is an apocalyptic number.

It is an amenable number.

850385 is a deficient number, since it is larger than the sum of its proper divisors (189655).

850385 is a wasteful number, since it uses less digits than its factorization.

850385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 850385 is about 922.1632176573. The cubic root of 850385 is about 94.7411234528.

The spelling of 850385 in words is "eight hundred fifty thousand, three hundred eighty-five".