6740563 has 4 divisors (see below), whose sum is σ = 6800328. Its totient is φ = 6680800.

The previous prime is 6740543. The next prime is 6740597. The reversal of 6740563 is 3650476.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6740563 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 a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6740543) 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, 29713 + ... + 29938.

It is an arithmetic number, because the mean of its divisors is an integer number (1700082).

Almost surely, 2^6740563 is an apocalyptic number.

6740563 is a deficient number, since it is larger than the sum of its proper divisors (59765).

6740563 is a wasteful number, since it uses less digits than its factorization.

6740563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59764.

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

The square root of 6740563 is about 2596.2594246338. The cubic root of 6740563 is about 188.9000432603.

The spelling of 6740563 in words is "six million, seven hundred forty thousand, five hundred sixty-three".