6643424706 has 16 divisors (see below), whose sum is σ = 13287879264. Its totient is φ = 2214303264.

The previous prime is 6643424701. The next prime is 6643424771. The reversal of 6643424706 is 6074243466.

It is not an unprimeable number, because it can be changed into a prime (6643424701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59901 + ... + 129903.

It is an arithmetic number, because the mean of its divisors is an integer number (830492454).

Almost surely, 2^6643424706 is an apocalyptic number.

6643424706 is an abundant number, since it is smaller than the sum of its proper divisors (6644454558).

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

6643424706 is a wasteful number, since it uses less digits than its factorization.

6643424706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85825.

The product of its (nonzero) digits is 580608, while the sum is 42.

The square root of 6643424706 is about 81507.2064666677. The cubic root of 6643424706 is about 1879.8823589055.

The spelling of 6643424706 in words is "six billion, six hundred forty-three million, four hundred twenty-four thousand, seven hundred six".