6644224044 has 24 divisors (see below), whose sum is σ = 17225766320. Its totient is φ = 2214741312.

The previous prime is 6644224033. The next prime is 6644224063. The reversal of 6644224044 is 4404224466.

6644224044 is a `hidden beast` number, since 6 + 644 + 2 + 2 + 4 + 0 + 4 + 4 = 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 Harshad number since it is a multiple of its sum of digits (36).

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, 30760189 + ... + 30760404.

Almost surely, 2^6644224044 is an apocalyptic number.

It is an amenable number.

6644224044 is an abundant number, since it is smaller than the sum of its proper divisors (10581542276).

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

6644224044 is a wasteful number, since it uses less digits than its factorization.

6644224044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61520606 (or 61520598 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

The square root of 6644224044 is about 81512.1097997101. The cubic root of 6644224044 is about 1879.9577518045.

The spelling of 6644224044 in words is "six billion, six hundred forty-four million, two hundred twenty-four thousand, forty-four".