6720105085 has 8 divisors (see below), whose sum is σ = 8064566496. Its totient is φ = 5375790480.

The previous prime is 6720105047. The next prime is 6720105089. The reversal of 6720105085 is 5805010276.

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

It is not a de Polignac number, because 6720105085 - 2¹¹ = 6720103037 is a prime.

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 6720105085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720105089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155950 + ... + 194320.

It is an arithmetic number, because the mean of its divisors is an integer number (1008070812).

Almost surely, 2^6720105085 is an apocalyptic number.

It is an amenable number.

6720105085 is a deficient number, since it is larger than the sum of its proper divisors (1344461411).

6720105085 is a wasteful number, since it uses less digits than its factorization.

6720105085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73403.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 6720105085 is about 81976.2470780408. The cubic root of 6720105085 is about 1887.0874285609.

The spelling of 6720105085 in words is "six billion, seven hundred twenty million, one hundred five thousand, eighty-five".