6740047 has 4 divisors (see below), whose sum is σ = 6768256. Its totient is φ = 6711840.

The previous prime is 6740029. The next prime is 6740077. The reversal of 6740047 is 7400476.

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

It is a cyclic number.

It is not a de Polignac number, because 6740047 - 2¹⁵ = 6707279 is a prime.

It is a Duffinian number.

6740047 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6739997 and 6740024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6740077) 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, 13743 + ... + 14224.

It is an arithmetic number, because the mean of its divisors is an integer number (1692064).

Almost surely, 2^6740047 is an apocalyptic number.

6740047 is a deficient number, since it is larger than the sum of its proper divisors (28209).

6740047 is a wasteful number, since it uses less digits than its factorization.

6740047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28208.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 6740047 is about 2596.1600489954. The cubic root of 6740047 is about 188.8952229454.

The spelling of 6740047 in words is "six million, seven hundred forty thousand, forty-seven".