6720023 has 8 divisors (see below), whose sum is σ = 6921936. Its totient is φ = 6520000.

The previous prime is 6720011. The next prime is 6720047. The reversal of 6720023 is 3200276.

6720023 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6720023 - 2¹⁸ = 6457879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6719977 and 6720004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9965 + ... + 10617.

It is an arithmetic number, because the mean of its divisors is an integer number (865242).

Almost surely, 2^6720023 is an apocalyptic number.

6720023 is a deficient number, since it is larger than the sum of its proper divisors (201913).

6720023 is a wasteful number, since it uses less digits than its factorization.

6720023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 6720023 is about 2592.3007155807. The cubic root of 6720023 is about 188.7079745040.

Adding to 6720023 its reverse (3200276), we get a palindrome (9920299).

The spelling of 6720023 in words is "six million, seven hundred twenty thousand, twenty-three".