6624427 has 2 divisors, whose sum is σ = 6624428. Its totient is φ = 6624426.

The previous prime is 6624413. The next prime is 6624433. The reversal of 6624427 is 7244266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6624427 - 2¹¹ = 6622379 is a prime.

It is not a weakly prime, because it can be changed into another prime (6624487) 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, 3312213 + 3312214.

It is an arithmetic number, because the mean of its divisors is an integer number (3312214).

Almost surely, 2^6624427 is an apocalyptic number.

6624427 is a deficient number, since it is larger than the sum of its proper divisors (1).

6624427 is an equidigital number, since it uses as much as digits as its factorization.

6624427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 31.

The square root of 6624427 is about 2573.7962234800. The cubic root of 6624427 is about 187.8088728336.

The spelling of 6624427 in words is "six million, six hundred twenty-four thousand, four hundred twenty-seven".