855008 has 48 divisors (see below), whose sum is σ = 2104704. Its totient is φ = 332160.

The previous prime is 854999. The next prime is 855031. The reversal of 855008 is 800558.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2291 + ... + 2637.

It is an arithmetic number, because the mean of its divisors is an integer number (43848).

2⁸⁵⁵⁰⁰⁸ is an apocalyptic number.

855008 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052352).

855008 is an abundant number, since it is smaller than the sum of its proper divisors (1249696).

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

855008 is a wasteful number, since it uses less digits than its factorization.

855008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 855008 is about 924.6664263398. Note that the first 3 decimals coincide. The cubic root of 855008 is about 94.9124956018.

The spelling of 855008 in words is "eight hundred fifty-five thousand, eight".