3066667561 has 2 divisors, whose sum is σ = 3066667562. Its totient is φ = 3066667560.

The previous prime is 3066667511. The next prime is 3066667573. The reversal of 3066667561 is 1657666603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2758875625 + 307791936 = 52525^2 + 17544^2 .

It is a cyclic number.

It is not a de Polignac number, because 3066667561 - 2⁹ = 3066667049 is a prime.

It is not a weakly prime, because it can be changed into another prime (3066667501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1533333780 + 1533333781.

It is an arithmetic number, because the mean of its divisors is an integer number (1533333781).

Almost surely, 2^3066667561 is an apocalyptic number.

It is an amenable number.

3066667561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3066667561 is an equidigital number, since it uses as much as digits as its factorization.

3066667561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 46.

The square root of 3066667561 is about 55377.5004943343. The cubic root of 3066667561 is about 1452.8548686541.

The spelling of 3066667561 in words is "three billion, sixty-six million, six hundred sixty-seven thousand, five hundred sixty-one".