6666828 has 24 divisors (see below), whose sum is σ = 17778432. Its totient is φ = 1904784.

The previous prime is 6666797. The next prime is 6666833. The reversal of 6666828 is 8286666.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 6666828.

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, 39600 + ... + 39767.

It is an arithmetic number, because the mean of its divisors is an integer number (740768).

Almost surely, 2^6666828 is an apocalyptic number.

It is an amenable number.

6666828 is an abundant number, since it is smaller than the sum of its proper divisors (11111604).

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

6666828 is a wasteful number, since it uses less digits than its factorization.

6666828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79381 (or 79379 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 6666828 is about 2582.0201393483. The cubic root of 6666828 is about 188.2087239688.

The spelling of 6666828 in words is "six million, six hundred sixty-six thousand, eight hundred twenty-eight".