6748513 has 4 divisors (see below), whose sum is σ = 6761988. Its totient is φ = 6735040.

The previous prime is 6748501. The next prime is 6748523. The reversal of 6748513 is 3158476.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 5531904 = 1103^2 + 2352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6748513 is a prime.

It is a super-2 number, since 2×6748513² = 91084855422338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6748523) 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, 5956 + ... + 6997.

It is an arithmetic number, because the mean of its divisors is an integer number (1690497).

Almost surely, 2^6748513 is an apocalyptic number.

It is an amenable number.

6748513 is a deficient number, since it is larger than the sum of its proper divisors (13475).

6748513 is a wasteful number, since it uses less digits than its factorization.

6748513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13474.

The product of its digits is 20160, while the sum is 34.

The square root of 6748513 is about 2597.7900223074. The cubic root of 6748513 is about 188.9742786680.

The spelling of 6748513 in words is "six million, seven hundred forty-eight thousand, five hundred thirteen".