806606 has 8 divisors (see below), whose sum is σ = 1251720. Its totient is φ = 389368.

The previous prime is 806581. The next prime is 806609. The reversal of 806606 is 606608.

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

It is a super-2 number, since 2×806606² = 1301226478472, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806609) by changing a digit.

806606 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, 6896 + ... + 7011.

It is an arithmetic number, because the mean of its divisors is an integer number (156465).

2⁸⁰⁶⁶⁰⁶ is an apocalyptic number.

806606 is a deficient number, since it is larger than the sum of its proper divisors (445114).

806606 is a wasteful number, since it uses less digits than its factorization.

806606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 806606 is about 898.1124651178. The cubic root of 806606 is about 93.0865960290.

The spelling of 806606 in words is "eight hundred six thousand, six hundred six".