6624659 has 2 divisors, whose sum is σ = 6624660. Its totient is φ = 6624658.

The previous prime is 6624641. The next prime is 6624671. The reversal of 6624659 is 9564266.

6624659 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 a de Polignac number, because none of the positive numbers 2^k-6624659 is a prime.

It is a super-2 number, since 2×6624659² = 87772213732562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (6624619) 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, 3312329 + 3312330.

It is an arithmetic number, because the mean of its divisors is an integer number (3312330).

Almost surely, 2^6624659 is an apocalyptic number.

6624659 is a deficient number, since it is larger than the sum of its proper divisors (1).

6624659 is an equidigital number, since it uses as much as digits as its factorization.

6624659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 6624659 is about 2573.8412926985. The cubic root of 6624659 is about 187.8110652823.

The spelling of 6624659 in words is "six million, six hundred twenty-four thousand, six hundred fifty-nine".