6740247 has 4 divisors (see below), whose sum is σ = 8987000. Its totient is φ = 4493496.

The previous prime is 6740197. The next prime is 6740273. The reversal of 6740247 is 7420476.

6740247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6740247 - 2⁶ = 6740183 is a prime.

It is a D-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 (6740297) 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, 1123372 + ... + 1123377.

It is an arithmetic number, because the mean of its divisors is an integer number (2246750).

Almost surely, 2^6740247 is an apocalyptic number.

6740247 is a deficient number, since it is larger than the sum of its proper divisors (2246753).

6740247 is a wasteful number, since it uses less digits than its factorization.

6740247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246752.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 6740247 is about 2596.1985671362. The cubic root of 6740247 is about 188.8970913137.

The spelling of 6740247 in words is "six million, seven hundred forty thousand, two hundred forty-seven".