850609 has 8 divisors (see below), whose sum is σ = 916992. Its totient is φ = 786720.

The previous prime is 850571. The next prime is 850613. The reversal of 850609 is 906058.

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 850609 - 2⁷ = 850481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850679) 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, 117 + ... + 1309.

It is an arithmetic number, because the mean of its divisors is an integer number (114624).

2⁸⁵⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

850609 is a deficient number, since it is larger than the sum of its proper divisors (66383).

850609 is a wasteful number, since it uses less digits than its factorization.

850609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 850609 is about 922.2846632141. The cubic root of 850609 is about 94.7494413122.

The spelling of 850609 in words is "eight hundred fifty thousand, six hundred nine".