6505830 has 24 divisors (see below), whose sum is σ = 16915392. Its totient is φ = 1734864.

The previous prime is 6505823. The next prime is 6505841. The reversal of 6505830 is 385056.

6505830 is a `hidden beast` number, since 650 + 5 + 8 + 3 + 0 = 666.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 6505794 and 6505803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36054 + ... + 36233.

It is an arithmetic number, because the mean of its divisors is an integer number (704808).

Almost surely, 2^6505830 is an apocalyptic number.

6505830 is an abundant number, since it is smaller than the sum of its proper divisors (10409562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6505830 is a wasteful number, since it uses less digits than its factorization.

6505830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72300 (or 72297 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6505830 is about 2550.6528576033. The cubic root of 6505830 is about 186.6813374240.

The spelling of 6505830 in words is "six million, five hundred five thousand, eight hundred thirty".