6820563431 has 8 divisors (see below), whose sum is σ = 7514285328. Its totient is φ = 6139120000.

The previous prime is 6820563329. The next prime is 6820563443. The reversal of 6820563431 is 1343650286.

6820563431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6820563431 - 2¹⁴ = 6820547047 is a prime.

It is a super-2 number, since 2×6820563431² = 93040171032588983522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6820563131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3068450 + ... + 3070671.

It is an arithmetic number, because the mean of its divisors is an integer number (939285666).

Almost surely, 2^6820563431 is an apocalyptic number.

6820563431 is a deficient number, since it is larger than the sum of its proper divisors (693721897).

6820563431 is a wasteful number, since it uses less digits than its factorization.

6820563431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139233.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 6820563431 is about 82586.7025071228. The cubic root of 6820563431 is about 1896.4442668048. Note that the first 3 decimals are identical.

The spelling of 6820563431 in words is "six billion, eight hundred twenty million, five hundred sixty-three thousand, four hundred thirty-one".