806165 has 4 divisors (see below), whose sum is σ = 967404. Its totient is φ = 644928.

The previous prime is 806159. The next prime is 806177. The reversal of 806165 is 561608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 485809 + 320356 = 697^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 806165 - 2¹⁸ = 544021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 806165.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80612 + ... + 80621.

It is an arithmetic number, because the mean of its divisors is an integer number (241851).

2⁸⁰⁶¹⁶⁵ is an apocalyptic number.

It is an amenable number.

806165 is a deficient number, since it is larger than the sum of its proper divisors (161239).

806165 is a wasteful number, since it uses less digits than its factorization.

806165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161238.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 806165 is about 897.8669166419. The cubic root of 806165 is about 93.0696283594.

The spelling of 806165 in words is "eight hundred six thousand, one hundred sixty-five".