6630539 has 2 divisors, whose sum is σ = 6630540. Its totient is φ = 6630538.

The previous prime is 6630523. The next prime is 6630541. The reversal of 6630539 is 9350366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6630539 - 2⁴ = 6630523 is a prime.

Together with 6630541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6630599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315269 + 3315270.

It is an arithmetic number, because the mean of its divisors is an integer number (3315270).

Almost surely, 2^6630539 is an apocalyptic number.

6630539 is a deficient number, since it is larger than the sum of its proper divisors (1).

6630539 is an equidigital number, since it uses as much as digits as its factorization.

6630539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 6630539 is about 2574.9833009167. The cubic root of 6630539 is about 187.8666154368.

The spelling of 6630539 in words is "six million, six hundred thirty thousand, five hundred thirty-nine".