6743281 has 2 divisors, whose sum is σ = 6743282. Its totient is φ = 6743280.

The previous prime is 6743279. The next prime is 6743291. The reversal of 6743281 is 1823476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6477025 + 266256 = 2545^2 + 516^2 .

It is a cyclic number.

It is not a de Polignac number, because 6743281 - 2¹ = 6743279 is a prime.

It is a super-2 number, since 2×6743281² = 90943677289922, which contains 22 as substring.

Together with 6743279, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6743291) 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, 3371640 + 3371641.

It is an arithmetic number, because the mean of its divisors is an integer number (3371641).

Almost surely, 2^6743281 is an apocalyptic number.

It is an amenable number.

6743281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6743281 is an equidigital number, since it uses as much as digits as its factorization.

6743281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 6743281 is about 2596.7828172568. The cubic root of 6743281 is about 188.9254299292.

The spelling of 6743281 in words is "six million, seven hundred forty-three thousand, two hundred eighty-one".