6664468241 has 2 divisors, whose sum is σ = 6664468242. Its totient is φ = 6664468240.

The previous prime is 6664468189. The next prime is 6664468243. The reversal of 6664468241 is 1428644666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5001459841 + 1663008400 = 70721^2 + 40780^2 .

It is a cyclic number.

It is not a de Polignac number, because 6664468241 - 2¹⁰ = 6664467217 is a prime.

Together with 6664468243, 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 (6664468243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332234120 + 3332234121.

It is an arithmetic number, because the mean of its divisors is an integer number (3332234121).

Almost surely, 2^6664468241 is an apocalyptic number.

It is an amenable number.

6664468241 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664468241 is an equidigital number, since it uses as much as digits as its factorization.

6664468241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 47.

The square root of 6664468241 is about 81636.1944299218. The cubic root of 6664468241 is about 1881.8651552415.

The spelling of 6664468241 in words is "six billion, six hundred sixty-four million, four hundred sixty-eight thousand, two hundred forty-one".