6566628 has 48 divisors (see below), whose sum is σ = 16369920. Its totient is φ = 2042784.

The previous prime is 6566621. The next prime is 6566629. The reversal of 6566628 is 8266656.

It is not an unprimeable number, because it can be changed into a prime (6566621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18751 + ... + 19097.

It is an arithmetic number, because the mean of its divisors is an integer number (341040).

Almost surely, 2^6566628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6566628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8184960).

6566628 is an abundant number, since it is smaller than the sum of its proper divisors (9803292).

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

6566628 is a wasteful number, since it uses less digits than its factorization.

6566628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 6566628 is about 2562.5432679274. The cubic root of 6566628 is about 187.2610574081.

The spelling of 6566628 in words is "six million, five hundred sixty-six thousand, six hundred twenty-eight".