6748681 has 4 divisors (see below), whose sum is σ = 6761232. Its totient is φ = 6736132.

The previous prime is 6748673. The next prime is 6748691. The reversal of 6748681 is 1868476.

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 not a de Polignac number, because 6748681 - 2³ = 6748673 is a prime.

It is a super-2 number, since 2×6748681² = 91089390479522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (6748691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5431 + ... + 6556.

It is an arithmetic number, because the mean of its divisors is an integer number (1690308).

Almost surely, 2^6748681 is an apocalyptic number.

It is an amenable number.

6748681 is a deficient number, since it is larger than the sum of its proper divisors (12551).

6748681 is a wasteful number, since it uses less digits than its factorization.

6748681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12550.

The product of its digits is 64512, while the sum is 40.

The square root of 6748681 is about 2597.8223572831. The cubic root of 6748681 is about 188.9758467870.

The spelling of 6748681 in words is "six million, seven hundred forty-eight thousand, six hundred eighty-one".