805626 has 20 divisors (see below), whose sum is σ = 1805562. Its totient is φ = 268488.

The previous prime is 805589. The next prime is 805633. The reversal of 805626 is 626508.

It can be written as a sum of positive squares in only one way, i.e., 641601 + 164025 = 801^2 + 405^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 805626.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 2325 + ... + 2648.

2⁸⁰⁵⁶²⁶ is an apocalyptic number.

805626 is an abundant number, since it is smaller than the sum of its proper divisors (999936).

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

805626 is a wasteful number, since it uses less digits than its factorization.

805626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4987 (or 4978 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 805626 is about 897.5667106126. The cubic root of 805626 is about 93.0488816910.

It can be divided in two parts, 805 and 626, that added together give a triangular number (1431 = T₅₃).

The spelling of 805626 in words is "eight hundred five thousand, six hundred twenty-six".