6720108481 has 4 divisors (see below), whose sum is σ = 6720275200. Its totient is φ = 6719941764.

The previous prime is 6720108463. The next prime is 6720108497. The reversal of 6720108481 is 1848010276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6720108481 is a prime.

It is a super-2 number, since 2×6720108481² = 90319715992816254722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6720108481.

It is not an unprimeable number, because it can be changed into a prime (6720108401) 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, 19000 + ... + 117478.

It is an arithmetic number, because the mean of its divisors is an integer number (1680068800).

Almost surely, 2^6720108481 is an apocalyptic number.

It is an amenable number.

6720108481 is a deficient number, since it is larger than the sum of its proper divisors (166719).

6720108481 is an equidigital number, since it uses as much as digits as its factorization.

6720108481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166718.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 6720108481 is about 81976.2677913553. The cubic root of 6720108481 is about 1887.0877464402.

The spelling of 6720108481 in words is "six billion, seven hundred twenty million, one hundred eight thousand, four hundred eighty-one".