6847487 has 2 divisors, whose sum is σ = 6847488. Its totient is φ = 6847486.

The previous prime is 6847471. The next prime is 6847499. The reversal of 6847487 is 7847486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6847487 - 2⁴ = 6847471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6847387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3423743 + 3423744.

It is an arithmetic number, because the mean of its divisors is an integer number (3423744).

Almost surely, 2^6847487 is an apocalyptic number.

6847487 is a deficient number, since it is larger than the sum of its proper divisors (1).

6847487 is an equidigital number, since it uses as much as digits as its factorization.

6847487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 44.

The square root of 6847487 is about 2616.7703376491. The cubic root of 6847487 is about 189.8936339092.

Subtracting 6847487 from its reverse (7847486), we obtain a palindrome (999999).

The spelling of 6847487 in words is "six million, eight hundred forty-seven thousand, four hundred eighty-seven".