805598 has 16 divisors (see below), whose sum is σ = 1282176. Its totient is φ = 378840.

The previous prime is 805589. The next prime is 805633. The reversal of 805598 is 895508.

It is a congruent number.

It is an unprimeable number.

805598 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3713 + ... + 3923.

It is an arithmetic number, because the mean of its divisors is an integer number (80136).

2⁸⁰⁵⁵⁹⁸ is an apocalyptic number.

805598 is a deficient number, since it is larger than the sum of its proper divisors (476578).

805598 is a wasteful number, since it uses less digits than its factorization.

805598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 805598 is about 897.5511127507. The cubic root of 805598 is about 93.0478036891.

The spelling of 805598 in words is "eight hundred five thousand, five hundred ninety-eight".