806611 has 4 divisors (see below), whose sum is σ = 868672. Its totient is φ = 744552.

The previous prime is 806609. The next prime is 806639. The reversal of 806611 is 116608.

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

It is a cyclic number.

It is not a de Polignac number, because 806611 - 2¹ = 806609 is a prime.

It is a Duffinian number.

806611 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (806671) 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 3 ways as a sum of consecutive naturals, for example, 31011 + ... + 31036.

It is an arithmetic number, because the mean of its divisors is an integer number (217168).

2⁸⁰⁶⁶¹¹ is an apocalyptic number.

806611 is a deficient number, since it is larger than the sum of its proper divisors (62061).

806611 is a wasteful number, since it uses less digits than its factorization.

806611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62060.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 806611 is about 898.1152487292. The cubic root of 806611 is about 93.0867883708.

The spelling of 806611 in words is "eight hundred six thousand, six hundred eleven".