6621163 has 2 divisors, whose sum is σ = 6621164. Its totient is φ = 6621162.

The previous prime is 6621151. The next prime is 6621191. The reversal of 6621163 is 3611266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6621163 - 2¹³ = 6612971 is a prime.

It is not a weakly prime, because it can be changed into another prime (6621103) 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, 3310581 + 3310582.

It is an arithmetic number, because the mean of its divisors is an integer number (3310582).

Almost surely, 2^6621163 is an apocalyptic number.

6621163 is a deficient number, since it is larger than the sum of its proper divisors (1).

6621163 is an equidigital number, since it uses as much as digits as its factorization.

6621163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 6621163 is about 2573.1620625215. The cubic root of 6621163 is about 187.7780219203.

The spelling of 6621163 in words is "six million, six hundred twenty-one thousand, one hundred sixty-three".