855687 has 12 divisors (see below), whose sum is σ = 1327416. Its totient is φ = 488880.

The previous prime is 855683. The next prime is 855697. The reversal of 855687 is 786558.

It is a happy number.

855687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 855687 - 2² = 855683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2764 + ... + 3057.

It is an arithmetic number, because the mean of its divisors is an integer number (110618).

2⁸⁵⁵⁶⁸⁷ is an apocalyptic number.

855687 is a deficient number, since it is larger than the sum of its proper divisors (471729).

855687 is a wasteful number, since it uses less digits than its factorization.

855687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5838 (or 5831 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 855687 is about 925.0335129064. The cubic root of 855687 is about 94.9376137030.

The spelling of 855687 in words is "eight hundred fifty-five thousand, six hundred eighty-seven".