805215 has 8 divisors (see below), whose sum is σ = 1288368. Its totient is φ = 429440.

The previous prime is 805213. The next prime is 805219. The reversal of 805215 is 512508.

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

It is not a de Polignac number, because 805215 - 2¹ = 805213 is a prime.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 805191 and 805200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805213) by changing a digit.

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, 26826 + ... + 26855.

It is an arithmetic number, because the mean of its divisors is an integer number (161046).

2⁸⁰⁵²¹⁵ is an apocalyptic number.

805215 is a deficient number, since it is larger than the sum of its proper divisors (483153).

805215 is a wasteful number, since it uses less digits than its factorization.

805215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53689.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 805215 is about 897.3377290630. The cubic root of 805215 is about 93.0330556560.

The spelling of 805215 in words is "eight hundred five thousand, two hundred fifteen".