6740681 has 4 divisors (see below), whose sum is σ = 6753552. Its totient is φ = 6727812.

The previous prime is 6740659. The next prime is 6740707. The reversal of 6740681 is 1860476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6740681 is a prime.

It is a super-2 number, since 2×6740681² = 90873560687522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6740651) 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, 5615 + ... + 6708.

It is an arithmetic number, because the mean of its divisors is an integer number (1688388).

Almost surely, 2^6740681 is an apocalyptic number.

It is an amenable number.

6740681 is a deficient number, since it is larger than the sum of its proper divisors (12871).

6740681 is a wasteful number, since it uses less digits than its factorization.

6740681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12870.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 6740681 is about 2596.2821495361. The cubic root of 6740681 is about 188.9011455458.

The spelling of 6740681 in words is "six million, seven hundred forty thousand, six hundred eighty-one".