828666 has 24 divisors (see below), whose sum is σ = 1890720. Its totient is φ = 261576.

The previous prime is 828649. The next prime is 828673. The reversal of 828666 is 666828.

It is a self number, because there is not a number n which added to its sum of digits gives 828666.

It is an unprimeable 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 11 ways as a sum of consecutive naturals, for example, 870 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (78780).

2⁸²⁸⁶⁶⁶ is an apocalyptic number.

828666 is an abundant number, since it is smaller than the sum of its proper divisors (1062054).

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

828666 is a wasteful number, since it uses less digits than its factorization.

828666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450 (or 2447 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 828666 is about 910.3109358895. The cubic root of 828666 is about 93.9275887182.

The spelling of 828666 in words is "eight hundred twenty-eight thousand, six hundred sixty-six".