6543679 has 2 divisors, whose sum is σ = 6543680. Its totient is φ = 6543678.

The previous prime is 6543671. The next prime is 6543683. The reversal of 6543679 is 9763456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6543679 - 2³ = 6543671 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6543671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271839 + 3271840.

It is an arithmetic number, because the mean of its divisors is an integer number (3271840).

Almost surely, 2^6543679 is an apocalyptic number.

6543679 is a deficient number, since it is larger than the sum of its proper divisors (1).

6543679 is an equidigital number, since it uses as much as digits as its factorization.

6543679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 6543679 is about 2558.0615707993. The cubic root of 6543679 is about 187.0426566305.

The spelling of 6543679 in words is "six million, five hundred forty-three thousand, six hundred seventy-nine".