6722120 has 32 divisors (see below), whose sum is σ = 15232320. Its totient is φ = 2669760.

The previous prime is 6722117. The next prime is 6722129. The reversal of 6722120 is 212276.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6722092 and 6722101.

It is not an unprimeable number, because it can be changed into a prime (6722129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6005 + ... + 7035.

It is an arithmetic number, because the mean of its divisors is an integer number (476010).

Almost surely, 2^6722120 is an apocalyptic number.

It is an amenable number.

6722120 is an abundant number, since it is smaller than the sum of its proper divisors (8510200).

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

6722120 is a wasteful number, since it uses less digits than its factorization.

6722120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 6722120 is about 2592.7051509958. The cubic root of 6722120 is about 188.7276013946.

Adding to 6722120 its reverse (212276), we get a palindrome (6934396).

The spelling of 6722120 in words is "six million, seven hundred twenty-two thousand, one hundred twenty".