6666226644 has 192 divisors, whose sum is σ = 19922724864. Its totient is φ = 1684800000.

The previous prime is 6666226603. The next prime is 6666226657. The reversal of 6666226644 is 4466226666.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6666226593 and 6666226602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5692179 + ... + 5693349.

It is an arithmetic number, because the mean of its divisors is an integer number (103764192).

Almost surely, 2^6666226644 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 6666226644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9961362432).

6666226644 is an abundant number, since it is smaller than the sum of its proper divisors (13256498220).

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

6666226644 is a wasteful number, since it uses less digits than its factorization.

6666226644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1356 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 48.

The square root of 6666226644 is about 81646.9634707868. The cubic root of 6666226644 is about 1882.0306491327.

The spelling of 6666226644 in words is "six billion, six hundred sixty-six million, two hundred twenty-six thousand, six hundred forty-four".