6720456 has 32 divisors (see below), whose sum is σ = 16964640. Its totient is φ = 2218368.

The previous prime is 6720443. The next prime is 6720473. The reversal of 6720456 is 6540276.

6720456 is nontrivially palindromic in base 7.

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 7 ways as a sum of consecutive naturals, for example, 1260 + ... + 3876.

It is an arithmetic number, because the mean of its divisors is an integer number (530145).

Almost surely, 2^6720456 is an apocalyptic number.

It is an amenable number.

6720456 is an abundant number, since it is smaller than the sum of its proper divisors (10244184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6720456 is a wasteful number, since it uses less digits than its factorization.

6720456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733 (or 2729 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 6720456 is about 2592.3842307806. The cubic root of 6720456 is about 188.7120275059.

The spelling of 6720456 in words is "six million, seven hundred twenty thousand, four hundred fifty-six".