6540530 has 8 divisors (see below), whose sum is σ = 11772972. Its totient is φ = 2616208.

The previous prime is 6540511. The next prime is 6540539. The reversal of 6540530 is 350456.

It can be written as a sum of positive squares in 2 ways, for example, as 5812921 + 727609 = 2411^2 + 853^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6540496 and 6540505.

It is not an unprimeable number, because it can be changed into a prime (6540539) 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, 327017 + ... + 327036.

Almost surely, 2^6540530 is an apocalyptic number.

6540530 is a deficient number, since it is larger than the sum of its proper divisors (5232442).

6540530 is a wasteful number, since it uses less digits than its factorization.

6540530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654060.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 6540530 is about 2557.4459916096. The cubic root of 6540530 is about 187.0126484434.

Adding to 6540530 its reverse (350456), we get a palindrome (6890986).

The spelling of 6540530 in words is "six million, five hundred forty thousand, five hundred thirty".