6720835 has 16 divisors (see below), whose sum is σ = 8903520. Its totient is φ = 4829440.

The previous prime is 6720823. The next prime is 6720841. The reversal of 6720835 is 5380276.

It is not a de Polignac number, because 6720835 - 2⁹ = 6720323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6720797 and 6720806.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4209 + ... + 5581.

It is an arithmetic number, because the mean of its divisors is an integer number (556470).

Almost surely, 2^6720835 is an apocalyptic number.

6720835 is a deficient number, since it is larger than the sum of its proper divisors (2182685).

6720835 is a wasteful number, since it uses less digits than its factorization.

6720835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 6720835 is about 2592.4573284820. The cubic root of 6720835 is about 188.7155749097.

It can be divided in two parts, 67 and 20835, that added together give a palindrome (20902).

The spelling of 6720835 in words is "six million, seven hundred twenty thousand, eight hundred thirty-five".