853666 has 8 divisors (see below), whose sum is σ = 1396944. Its totient is φ = 388020.

The previous prime is 853663. The next prime is 853667. The reversal of 853666 is 666358.

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

It is not an unprimeable number, because it can be changed into a prime (853663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19380 + ... + 19423.

It is an arithmetic number, because the mean of its divisors is an integer number (174618).

2⁸⁵³⁶⁶⁶ is an apocalyptic number.

853666 is a deficient number, since it is larger than the sum of its proper divisors (543278).

853666 is a wasteful number, since it uses less digits than its factorization.

853666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38816.

The product of its digits is 25920, while the sum is 34.

The square root of 853666 is about 923.9404742731. The cubic root of 853666 is about 94.8628121417.

The spelling of 853666 in words is "eight hundred fifty-three thousand, six hundred sixty-six".