6748561 has 4 divisors (see below), whose sum is σ = 6981300. Its totient is φ = 6515824.

The previous prime is 6748531. The next prime is 6748571. The reversal of 6748561 is 1658476.

6748561 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 can be written as a sum of positive squares in 2 ways, for example, as 5107600 + 1640961 = 2260^2 + 1281^2 .

It is a cyclic number.

It is not a de Polignac number, because 6748561 - 2⁵ = 6748529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6748561.

It is not an unprimeable number, because it can be changed into a prime (6748501) 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, 116326 + ... + 116383.

It is an arithmetic number, because the mean of its divisors is an integer number (1745325).

Almost surely, 2^6748561 is an apocalyptic number.

It is an amenable number.

6748561 is a deficient number, since it is larger than the sum of its proper divisors (232739).

6748561 is a wasteful number, since it uses less digits than its factorization.

6748561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232738.

The product of its digits is 40320, while the sum is 37.

The square root of 6748561 is about 2597.7992609130. The cubic root of 6748561 is about 188.9747267047.

The spelling of 6748561 in words is "six million, seven hundred forty-eight thousand, five hundred sixty-one".