6621842227 has 64 divisors (see below), whose sum is σ = 9644479488. Its totient is φ = 4372992000.

The previous prime is 6621842189. The next prime is 6621842243. The reversal of 6621842227 is 7222481266.

It is not a de Polignac number, because 6621842227 - 2⁷ = 6621842099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6621842227.

It is not an unprimeable number, because it can be changed into a prime (6621842257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 692952 + ... + 702442.

It is an arithmetic number, because the mean of its divisors is an integer number (150694992).

Almost surely, 2^6621842227 is an apocalyptic number.

6621842227 is a deficient number, since it is larger than the sum of its proper divisors (3022637261).

6621842227 is a wasteful number, since it uses less digits than its factorization.

6621842227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580.

The product of its digits is 129024, while the sum is 40.

The square root of 6621842227 is about 81374.7026231125. The cubic root of 6621842227 is about 1877.8444272286.

It can be divided in two parts, 6621 and 842227, that added together give a palindrome (848848).

The spelling of 6621842227 in words is "six billion, six hundred twenty-one million, eight hundred forty-two thousand, two hundred twenty-seven".