6216979 has 2 divisors, whose sum is σ = 6216980. Its totient is φ = 6216978.

The previous prime is 6216967. The next prime is 6216989. The reversal of 6216979 is 9796126.

6216979 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 is a cyclic number.

It is not a de Polignac number, because 6216979 - 2¹¹ = 6214931 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (6216929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3108489 + 3108490.

It is an arithmetic number, because the mean of its divisors is an integer number (3108490).

Almost surely, 2^6216979 is an apocalyptic number.

6216979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6216979 is an equidigital number, since it uses as much as digits as its factorization.

6216979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 6216979 is about 2493.3870537885. The cubic root of 6216979 is about 183.8766008623.

The spelling of 6216979 in words is "six million, two hundred sixteen thousand, nine hundred seventy-nine".