805568 has 28 divisors (see below), whose sum is σ = 1642872. Its totient is φ = 391680.

The previous prime is 805559. The next prime is 805573. The reversal of 805568 is 865508.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an Ulam number.

It is a plaindrome in base 13.

It is an unprimeable 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, 2471 + ... + 2777.

It is an arithmetic number, because the mean of its divisors is an integer number (58674).

2⁸⁰⁵⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821436).

805568 is an abundant number, since it is smaller than the sum of its proper divisors (837304).

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

805568 is a wasteful number, since it uses less digits than its factorization.

805568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 805568 is about 897.5344004549. The cubic root of 805568 is about 93.0466486595.

The spelling of 805568 in words is "eight hundred five thousand, five hundred sixty-eight".