6720044 has 12 divisors (see below), whose sum is σ = 11810568. Its totient is φ = 3345600.

The previous prime is 6720011. The next prime is 6720047. The reversal of 6720044 is 4400276.

It is not an unprimeable number, because it can be changed into a prime (6720047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2522 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (984214).

Almost surely, 2^6720044 is an apocalyptic number.

It is an amenable number.

6720044 is a deficient number, since it is larger than the sum of its proper divisors (5090524).

6720044 is a wasteful number, since it uses less digits than its factorization.

6720044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7216 (or 7214 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 6720044 is about 2592.3047660335. The cubic root of 6720044 is about 188.7081710739.

The spelling of 6720044 in words is "six million, seven hundred twenty thousand, forty-four".