6566120087 has 2 divisors, whose sum is σ = 6566120088. Its totient is φ = 6566120086.

The previous prime is 6566120039. The next prime is 6566120153. The reversal of 6566120087 is 7800216656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6566120087 - 2¹⁴ = 6566103703 is a prime.

It is a super-2 number, since 2×6566120087² = 86227865993809775138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6566120387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283060043 + 3283060044.

It is an arithmetic number, because the mean of its divisors is an integer number (3283060044).

Almost surely, 2^6566120087 is an apocalyptic number.

6566120087 is a deficient number, since it is larger than the sum of its proper divisors (1).

6566120087 is an equidigital number, since it uses as much as digits as its factorization.

6566120087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 6566120087 is about 81031.5993116266. The cubic root of 6566120087 is about 1872.5622921839.

The spelling of 6566120087 in words is "six billion, five hundred sixty-six million, one hundred twenty thousand, eighty-seven".