6630523 has 2 divisors, whose sum is σ = 6630524. Its totient is φ = 6630522.

The previous prime is 6630499. The next prime is 6630539. The reversal of 6630523 is 3250366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6630523 - 2⁹ = 6630011 is a prime.

It is an Ulam number.

6630523 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6630553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315261 + 3315262.

It is an arithmetic number, because the mean of its divisors is an integer number (3315262).

Almost surely, 2^6630523 is an apocalyptic number.

6630523 is a deficient number, since it is larger than the sum of its proper divisors (1).

6630523 is an equidigital number, since it uses as much as digits as its factorization.

6630523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 6630523 is about 2574.9801940986. The cubic root of 6630523 is about 187.8664643245.

Adding to 6630523 its reverse (3250366), we get a palindrome (9880889).

The spelling of 6630523 in words is "six million, six hundred thirty thousand, five hundred twenty-three".