6506743 has 4 divisors (see below), whose sum is σ = 6512400. Its totient is φ = 6501088.

The previous prime is 6506719. The next prime is 6506779. The reversal of 6506743 is 3476056.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6506743 - 2¹⁷ = 6375671 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506243) 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 in 3 ways as a sum of consecutive naturals, for example, 418 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (1628100).

Almost surely, 2^6506743 is an apocalyptic number.

6506743 is a deficient number, since it is larger than the sum of its proper divisors (5657).

6506743 is a wasteful number, since it uses less digits than its factorization.

6506743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 6506743 is about 2550.8318251112. The cubic root of 6506743 is about 186.6900696990.

The spelling of 6506743 in words is "six million, five hundred six thousand, seven hundred forty-three".