6566287841 has 2 divisors, whose sum is σ = 6566287842. Its totient is φ = 6566287840.

The previous prime is 6566287837. The next prime is 6566287873. The reversal of 6566287841 is 1487826656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6548046400 + 18241441 = 80920^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 6566287841 - 2² = 6566287837 is a prime.

It is a super-2 number, since 2×6566287841² = 86232272021728882562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6566287811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283143920 + 3283143921.

It is an arithmetic number, because the mean of its divisors is an integer number (3283143921).

Almost surely, 2^6566287841 is an apocalyptic number.

It is an amenable number.

6566287841 is a deficient number, since it is larger than the sum of its proper divisors (1).

6566287841 is an equidigital number, since it uses as much as digits as its factorization.

6566287841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 53.

The square root of 6566287841 is about 81032.6344197201. The cubic root of 6566287841 is about 1872.5782390513.

The spelling of 6566287841 in words is "six billion, five hundred sixty-six million, two hundred eighty-seven thousand, eight hundred forty-one".