6648481 has 8 divisors (see below), whose sum is σ = 7617024. Its totient is φ = 5684640.

The previous prime is 6648457. The next prime is 6648487. The reversal of 6648481 is 1848466.

6648481 is a nontrivial binomial coefficient, being equal to C(3647, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6648481 - 2¹³ = 6640289 is a prime.

It is a super-2 number, since 2×6648481² = 88404599214722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6648481.

It is not an unprimeable number, because it can be changed into a prime (6648487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2736 + ... + 4558.

It is an arithmetic number, because the mean of its divisors is an integer number (952128).

Almost surely, 2^6648481 is an apocalyptic number.

6648481 is the 3646-th triangular number.

6648481 is the 1216-th centered nonagonal number.

It is an amenable number.

6648481 is a deficient number, since it is larger than the sum of its proper divisors (968543).

6648481 is a wasteful number, since it uses less digits than its factorization.

6648481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its digits is 36864, while the sum is 37.

The square root of 6648481 is about 2578.4648533575. The cubic root of 6648481 is about 188.0359162555.

The spelling of 6648481 in words is "six million, six hundred forty-eight thousand, four hundred eighty-one".