6644222226 has 24 divisors (see below), whose sum is σ = 14402029824. Its totient is φ = 2213784600.

The previous prime is 6644222213. The next prime is 6644222243. The reversal of 6644222226 is 6222224466.

6644222226 is a `hidden beast` number, since 6 + 6 + 4 + 422 + 2 + 226 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36186 + ... + 120821.

It is an arithmetic number, because the mean of its divisors is an integer number (600084576).

Almost surely, 2^6644222226 is an apocalyptic number.

6644222226 is an abundant number, since it is smaller than the sum of its proper divisors (7757807598).

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

6644222226 is a wasteful number, since it uses less digits than its factorization.

6644222226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159366 (or 159363 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 6644222226 is about 81512.0986479921. The cubic root of 6644222226 is about 1879.9575803391.

The spelling of 6644222226 in words is "six billion, six hundred forty-four million, two hundred twenty-two thousand, two hundred twenty-six".