6720135 has 32 divisors (see below), whose sum is σ = 11197440. Its totient is φ = 3439488.

The previous prime is 6720089. The next prime is 6720143. The reversal of 6720135 is 5310276.

It is not a de Polignac number, because 6720135 - 2⁹ = 6719623 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 62752 + ... + 62858.

It is an arithmetic number, because the mean of its divisors is an integer number (349920).

Almost surely, 2^6720135 is an apocalyptic number.

6720135 is a deficient number, since it is larger than the sum of its proper divisors (4477305).

6720135 is a wasteful number, since it uses less digits than its factorization.

6720135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 6720135 is about 2592.3223179227. The cubic root of 6720135 is about 188.7090228722.

It can be divided in two parts, 67 and 20135, that added together give a palindrome (20202).

The spelling of 6720135 in words is "six million, seven hundred twenty thousand, one hundred thirty-five".