6811530 has 32 divisors (see below), whose sum is σ = 17834688. Its totient is φ = 1651200.

The previous prime is 6811517. The next prime is 6811579. The reversal of 6811530 is 351186.

6811530 is nontrivially palindromic in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 6811530.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9991 + ... + 10650.

It is an arithmetic number, because the mean of its divisors is an integer number (557334).

Almost surely, 2^6811530 is an apocalyptic number.

6811530 is an abundant number, since it is smaller than the sum of its proper divisors (11023158).

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

6811530 is a wasteful number, since it uses less digits than its factorization.

6811530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20662.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 6811530 is about 2609.8908023134. The cubic root of 6811530 is about 189.5606654324.

It can be divided in two parts, 681 and 1530, that added together give a triangular number (2211 = T₆₆).

The spelling of 6811530 in words is "six million, eight hundred eleven thousand, five hundred thirty".