805648 has 20 divisors (see below), whose sum is σ = 1598608. Its totient is φ = 393120.

The previous prime is 805639. The next prime is 805687. The reversal of 805648 is 846508.

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, 103 + ... + 1273.

2⁸⁰⁵⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

805648 is a deficient number, since it is larger than the sum of its proper divisors (792960).

805648 is a wasteful number, since it uses less digits than its factorization.

805648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 805648 is about 897.5789658855. The cubic root of 805648 is about 93.0497286749.

The spelling of 805648 in words is "eight hundred five thousand, six hundred forty-eight".