6720812002 has 16 divisors (see below), whose sum is σ = 10432913400. Its totient is φ = 3243264640.

The previous prime is 6720811967. The next prime is 6720812003. The reversal of 6720812002 is 2002180276.

It can be written as a sum of positive squares in 4 ways, for example, as 6190385041 + 530426961 = 78679^2 + 23031^2 .

It is not an unprimeable number, because it can be changed into a prime (6720812003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 137052 + ... + 179512.

Almost surely, 2^6720812002 is an apocalyptic number.

6720812002 is a deficient number, since it is larger than the sum of its proper divisors (3712101398).

6720812002 is a wasteful number, since it uses less digits than its factorization.

6720812002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45221.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 6720812002 is about 81980.5586831415. The cubic root of 6720812002 is about 1887.1535965445.

Adding to 6720812002 its reverse (2002180276), we get a palindrome (8722992278).

The spelling of 6720812002 in words is "six billion, seven hundred twenty million, eight hundred twelve thousand, two".