6648487 has 2 divisors, whose sum is σ = 6648488. Its totient is φ = 6648486.

The previous prime is 6648457. The next prime is 6648491. The reversal of 6648487 is 7848466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6648487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6648407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3324243 + 3324244.

It is an arithmetic number, because the mean of its divisors is an integer number (3324244).

Almost surely, 2^6648487 is an apocalyptic number.

6648487 is a deficient number, since it is larger than the sum of its proper divisors (1).

6648487 is an equidigital number, since it uses as much as digits as its factorization.

6648487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 43.

The square root of 6648487 is about 2578.4660168402. The cubic root of 6648487 is about 188.0359728206.

The spelling of 6648487 in words is "six million, six hundred forty-eight thousand, four hundred eighty-seven".