6684720 has 160 divisors (see below), whose sum is σ = 24855552. Its totient is φ = 1453056.

The previous prime is 6684719. The next prime is 6684749. The reversal of 6684720 is 274866.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38554 + ... + 38726.

Almost surely, 2^6684720 is an apocalyptic number.

6684720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6684720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12427776).

6684720 is an abundant number, since it is smaller than the sum of its proper divisors (18170832).

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

6684720 is a wasteful number, since it uses less digits than its factorization.

6684720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 6684720 is about 2585.4825468372. The cubic root of 6684720 is about 188.3769410250.

The spelling of 6684720 in words is "six million, six hundred eighty-four thousand, seven hundred twenty".