807666 has 16 divisors (see below), whose sum is σ = 1625184. Its totient is φ = 267584.

The previous prime is 807647. The next prime is 807689. The reversal of 807666 is 666708.

807666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 807666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066 + ... + 1658.

It is an arithmetic number, because the mean of its divisors is an integer number (101574).

2⁸⁰⁷⁶⁶⁶ is an apocalyptic number.

807666 is an abundant number, since it is smaller than the sum of its proper divisors (817518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

807666 is a wasteful number, since it uses less digits than its factorization.

807666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 807666 is about 898.7023979049. The cubic root of 807666 is about 93.1273547143.

The spelling of 807666 in words is "eight hundred seven thousand, six hundred sixty-six".