850664 has 16 divisors (see below), whose sum is σ = 1610820. Its totient is φ = 421120.

The previous prime is 850637. The next prime is 850673. The reversal of 850664 is 466058.

It can be written as a sum of positive squares in 2 ways, for example, as 792100 + 58564 = 890^2 + 242^2 .

It is an unprimeable number.

850664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434 + ... + 1374.

2⁸⁵⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

850664 is a deficient number, since it is larger than the sum of its proper divisors (760156).

850664 is a wasteful number, since it uses less digits than its factorization.

850664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 850664 is about 922.3144799904. The cubic root of 850664 is about 94.7514834205.

The spelling of 850664 in words is "eight hundred fifty thousand, six hundred sixty-four".