855568 has 20 divisors (see below), whose sum is σ = 1894720. Its totient is φ = 366624.

The previous prime is 855527. The next prime is 855581. The reversal of 855568 is 865558.

It is a happy number.

It is an unprimeable number.

855568 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3708 + ... + 3931.

It is an arithmetic number, because the mean of its divisors is an integer number (94736).

2⁸⁵⁵⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

855568 is an abundant number, since it is smaller than the sum of its proper divisors (1039152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855568 is a wasteful number, since it uses less digits than its factorization.

855568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7654 (or 7648 counting only the distinct ones).

The product of its digits is 48000, while the sum is 37.

The square root of 855568 is about 924.9691886760. The cubic root of 855568 is about 94.9332125221.

The spelling of 855568 in words is "eight hundred fifty-five thousand, five hundred sixty-eight".