6216722989 has 2 divisors, whose sum is σ = 6216722990. Its totient is φ = 6216722988.

The previous prime is 6216722959. The next prime is 6216722999. The reversal of 6216722989 is 9892276126.

6216722989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6152049225 + 64673764 = 78435^2 + 8042^2 .

It is a cyclic number.

It is not a de Polignac number, because 6216722989 - 2⁷ = 6216722861 is a prime.

It is a super-2 number, since 2×6216722989² = 77295289443922188242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6216722929) 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 as a sum of consecutive naturals, namely, 3108361494 + 3108361495.

It is an arithmetic number, because the mean of its divisors is an integer number (3108361495).

Almost surely, 2^6216722989 is an apocalyptic number.

It is an amenable number.

6216722989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6216722989 is an equidigital number, since it uses as much as digits as its factorization.

6216722989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 6216722989 is about 78846.1983167229. The cubic root of 6216722989 is about 1838.7407685622.

The spelling of 6216722989 in words is "six billion, two hundred sixteen million, seven hundred twenty-two thousand, nine hundred eighty-nine".