806646 has 16 divisors (see below), whose sum is σ = 1623024. Its totient is φ = 267264.

The previous prime is 806639. The next prime is 806657. The reversal of 806646 is 646608.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

806646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110 + ... + 1686.

It is an arithmetic number, because the mean of its divisors is an integer number (101439).

2⁸⁰⁶⁶⁴⁶ is an apocalyptic number.

806646 is an abundant number, since it is smaller than the sum of its proper divisors (816378).

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

806646 is a wasteful number, since it uses less digits than its factorization.

806646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 806646 is about 898.1347337677. The cubic root of 806646 is about 93.0881347407.

The spelling of 806646 in words is "eight hundred six thousand, six hundred forty-six".