6730861 has 8 divisors (see below), whose sum is σ = 7155000. Its totient is φ = 6309888.

The previous prime is 6730849. The next prime is 6730903. The reversal of 6730861 is 1680376.

6730861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 324900 + 6405961 = 570^2 + 2531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6730861 - 2¹³ = 6722669 is a prime.

It is an Ulam number.

It is a Duffinian number.

6730861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6730811) 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 7 ways as a sum of consecutive naturals, for example, 4765 + ... + 6013.

It is an arithmetic number, because the mean of its divisors is an integer number (894375).

Almost surely, 2^6730861 is an apocalyptic number.

It is an amenable number.

6730861 is a deficient number, since it is larger than the sum of its proper divisors (424139).

6730861 is a wasteful number, since it uses less digits than its factorization.

6730861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 6730861 is about 2594.3902944623. The cubic root of 6730861 is about 188.8093689243.

The spelling of 6730861 in words is "six million, seven hundred thirty thousand, eight hundred sixty-one".