6823420816 has 45 divisors (see below), whose sum is σ = 13414591281. Its totient is φ = 3362313216.

The previous prime is 6823420811. The next prime is 6823420829. The reversal of 6823420816 is 6180243286.

The square root of 6823420816 is 82604.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1653235600 + 5170185216 = 40660^2 + 71904^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6823420811) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35354416 + ... + 35354608.

Almost surely, 2^6823420816 is an apocalyptic number.

6823420816 is the 82604-th square number.

It is an amenable number.

6823420816 is a deficient number, since it is larger than the sum of its proper divisors (6591170465).

6823420816 is an equidigital number, since it uses as much as digits as its factorization.

6823420816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The cubic root of 6823420816 is about 1896.7090599269.

The spelling of 6823420816 in words is "six billion, eight hundred twenty-three million, four hundred twenty thousand, eight hundred sixteen".