6720491444 has 12 divisors (see below), whose sum is σ = 12379852800. Its totient is φ = 3183390648.

The previous prime is 6720491443. The next prime is 6720491489. The reversal of 6720491444 is 4441940276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720491441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44213684 + ... + 44213835.

It is an arithmetic number, because the mean of its divisors is an integer number (1031654400).

Almost surely, 2^6720491444 is an apocalyptic number.

It is an amenable number.

6720491444 is a deficient number, since it is larger than the sum of its proper divisors (5659361356).

6720491444 is a wasteful number, since it uses less digits than its factorization.

6720491444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88427542 (or 88427540 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 6720491444 is about 81978.6035743474. The cubic root of 6720491444 is about 1887.1235926402.

The spelling of 6720491444 in words is "six billion, seven hundred twenty million, four hundred ninety-one thousand, four hundred forty-four".