6720027613 has 8 divisors (see below), whose sum is σ = 7279777400. Its totient is φ = 6203100384.

The previous prime is 6720027593. The next prime is 6720027637. The reversal of 6720027613 is 3167200276.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 858900249 + 5861127364 = 29307^2 + 76558^2 .

It is not a de Polignac number, because 6720027613 - 2¹⁷ = 6719896541 is a prime.

It is a super-2 number, since 2×6720027613² = 90317542238964955538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720027683) 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, 1527168 + ... + 1531561.

It is an arithmetic number, because the mean of its divisors is an integer number (909972175).

Almost surely, 2^6720027613 is an apocalyptic number.

It is an amenable number.

6720027613 is a deficient number, since it is larger than the sum of its proper divisors (559749787).

6720027613 is an equidigital number, since it uses as much as digits as its factorization.

6720027613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058768 (or 3058742 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 6720027613 is about 81975.7745495582. The cubic root of 6720027613 is about 1887.0801768390.

Adding to 6720027613 its reverse (3167200276), we get a palindrome (9887227889).

The spelling of 6720027613 in words is "six billion, seven hundred twenty million, twenty-seven thousand, six hundred thirteen".