6648572269 has 2 divisors, whose sum is σ = 6648572270. Its totient is φ = 6648572268.

The previous prime is 6648572243. The next prime is 6648572311. The reversal of 6648572269 is 9622758466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3539060100 + 3109512169 = 59490^2 + 55763^2 .

It is a cyclic number.

It is not a de Polignac number, because 6648572269 - 2¹⁵ = 6648539501 is a prime.

It is a super-2 number, since 2×6648572269² = 88407026432231616722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6648572239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3324286134 + 3324286135.

It is an arithmetic number, because the mean of its divisors is an integer number (3324286135).

Almost surely, 2^6648572269 is an apocalyptic number.

It is an amenable number.

6648572269 is a deficient number, since it is larger than the sum of its proper divisors (1).

6648572269 is an equidigital number, since it uses as much as digits as its factorization.

6648572269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 55.

The square root of 6648572269 is about 81538.7777011650. Note that the first 4 decimals coincide. The cubic root of 6648572269 is about 1880.3677669125.

The spelling of 6648572269 in words is "six billion, six hundred forty-eight million, five hundred seventy-two thousand, two hundred sixty-nine".