6534247 has 2 divisors, whose sum is σ = 6534248. Its totient is φ = 6534246.

The previous prime is 6534197. The next prime is 6534257. The reversal of 6534247 is 7424356.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6534247 is a prime.

It is a Chen prime.

6534247 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6534257) 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, 3267123 + 3267124.

It is an arithmetic number, because the mean of its divisors is an integer number (3267124).

Almost surely, 2^6534247 is an apocalyptic number.

6534247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6534247 is an equidigital number, since it uses as much as digits as its factorization.

6534247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 6534247 is about 2556.2173225295. The cubic root of 6534247 is about 186.9527462175.

It can be divided in two parts, 653 and 4247, that added together give a square (4900 = 70²).

The spelling of 6534247 in words is "six million, five hundred thirty-four thousand, two hundred forty-seven".