6720244 has 12 divisors (see below), whose sum is σ = 11783268. Its totient is φ = 3353600.

The previous prime is 6720239. The next prime is 6720251. The reversal of 6720244 is 4420276.

6720244 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5817744 + 902500 = 2412^2 + 950^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (981939).

Almost surely, 2^6720244 is an apocalyptic number.

It is an amenable number.

6720244 is a deficient number, since it is larger than the sum of its proper divisors (5063024).

6720244 is a wasteful number, since it uses less digits than its factorization.

6720244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 6720244 is about 2592.3433414577. The cubic root of 6720244 is about 188.7100431480.

Subtracting from 6720244 its reverse (4420276), we obtain a cube (2299968 = 132³).

The spelling of 6720244 in words is "six million, seven hundred twenty thousand, two hundred forty-four".