805366 has 8 divisors (see below), whose sum is σ = 1217160. Its totient is φ = 399648.

The previous prime is 805339. The next prime is 805369. The reversal of 805366 is 663508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×805366² = 1297228787912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805369) by changing a digit.

805366 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 3 ways as a sum of consecutive naturals, for example, 1171 + ... + 1726.

It is an arithmetic number, because the mean of its divisors is an integer number (152145).

2⁸⁰⁵³⁶⁶ is an apocalyptic number.

805366 is a deficient number, since it is larger than the sum of its proper divisors (411794).

805366 is a wasteful number, since it uses less digits than its factorization.

805366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 805366 is about 897.4218628939. The cubic root of 805366 is about 93.0388707130.

The spelling of 805366 in words is "eight hundred five thousand, three hundred sixty-six".