6720380255 has 8 divisors (see below), whose sum is σ = 8072361024. Its totient is φ = 5371034400.

The previous prime is 6720380243. The next prime is 6720380257. The reversal of 6720380255 is 5520830276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6720380255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720380257) 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, 653111 + ... + 663320.

It is an arithmetic number, because the mean of its divisors is an integer number (1009045128).

Almost surely, 2^6720380255 is an apocalyptic number.

6720380255 is a deficient number, since it is larger than the sum of its proper divisors (1351980769).

6720380255 is a wasteful number, since it uses less digits than its factorization.

6720380255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317457.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 6720380255 is about 81977.9254128817. The cubic root of 6720380255 is about 1887.1131852395.

The spelling of 6720380255 in words is "six billion, seven hundred twenty million, three hundred eighty thousand, two hundred fifty-five".