6811032821 has 4 divisors (see below), whose sum is σ = 6812147712. Its totient is φ = 6809917932.

The previous prime is 6811032799. The next prime is 6811032841. The reversal of 6811032821 is 1282301186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6811032821 - 2²⁶ = 6743923957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6811032841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548231 + ... + 560516.

It is an arithmetic number, because the mean of its divisors is an integer number (1703036928).

Almost surely, 2^6811032821 is an apocalyptic number.

It is an amenable number.

6811032821 is a deficient number, since it is larger than the sum of its proper divisors (1114891).

6811032821 is a wasteful number, since it uses less digits than its factorization.

6811032821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114890.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 6811032821 is about 82528.9817033992. The cubic root of 6811032821 is about 1895.5605325884.

The spelling of 6811032821 in words is "six billion, eight hundred eleven million, thirty-two thousand, eight hundred twenty-one".