805312 has 14 divisors (see below), whose sum is σ = 1598168. Its totient is φ = 402624.

The previous prime is 805309. The next prime is 805313. The reversal of 805312 is 213508.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 805312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805313) by changing a digit.

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 as a sum of consecutive naturals, namely, 6228 + ... + 6355.

2⁸⁰⁵³¹² is an apocalyptic number.

It is an amenable number.

805312 is a deficient number, since it is larger than the sum of its proper divisors (792856).

805312 is a wasteful number, since it uses less digits than its factorization.

805312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12595 (or 12585 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 805312 is about 897.3917762048. The cubic root of 805312 is about 93.0367912397.

The spelling of 805312 in words is "eight hundred five thousand, three hundred twelve".