855646 has 32 divisors (see below), whose sum is σ = 1555200. Its totient is φ = 348480.

The previous prime is 855641. The next prime is 855667. The reversal of 855646 is 646558.

Its product of digits (28800) is a multiple of the sum of its prime divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9570 + ... + 9658.

It is an arithmetic number, because the mean of its divisors is an integer number (48600).

2⁸⁵⁵⁶⁴⁶ is an apocalyptic number.

855646 is a deficient number, since it is larger than the sum of its proper divisors (699554).

855646 is a wasteful number, since it uses less digits than its factorization.

855646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144.

The product of its digits is 28800, while the sum is 34.

The square root of 855646 is about 925.0113512817. The cubic root of 855646 is about 94.9360973758.

The spelling of 855646 in words is "eight hundred fifty-five thousand, six hundred forty-six".