6684520 has 16 divisors (see below), whose sum is σ = 15040260. Its totient is φ = 2673792.

The previous prime is 6684497. The next prime is 6684527. The reversal of 6684520 is 254866.

It can be written as a sum of positive squares in 2 ways, for example, as 6522916 + 161604 = 2554^2 + 402^2 .

It is not an unprimeable number, because it can be changed into a prime (6684527) 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, 83517 + ... + 83596.

Almost surely, 2^6684520 is an apocalyptic number.

It is an amenable number.

6684520 is an abundant number, since it is smaller than the sum of its proper divisors (8355740).

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

6684520 is a wasteful number, since it uses less digits than its factorization.

6684520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167124 (or 167120 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6684520 is about 2585.4438690484. The cubic root of 6684520 is about 188.3750623243.

The spelling of 6684520 in words is "six million, six hundred eighty-four thousand, five hundred twenty".