6979543 has 2 divisors, whose sum is σ = 6979544. Its totient is φ = 6979542.

The previous prime is 6979529. The next prime is 6979561. The reversal of 6979543 is 3459796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6979543 - 2¹³ = 6971351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6979543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6979573) 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, 3489771 + 3489772.

It is an arithmetic number, because the mean of its divisors is an integer number (3489772).

Almost surely, 2^6979543 is an apocalyptic number.

6979543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6979543 is an equidigital number, since it uses as much as digits as its factorization.

6979543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 6979543 is about 2641.8824727834. The cubic root of 6979543 is about 191.1065896287.

The spelling of 6979543 in words is "six million, nine hundred seventy-nine thousand, five hundred forty-three".