6606555061 has 2 divisors, whose sum is σ = 6606555062. Its totient is φ = 6606555060.

The previous prime is 6606555013. The next prime is 6606555071. The reversal of 6606555061 is 1605556066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5038870225 + 1567684836 = 70985^2 + 39594^2 .

It is a cyclic number.

It is not a de Polignac number, because 6606555061 - 2²³ = 6598166453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6606555001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303277530 + 3303277531.

It is an arithmetic number, because the mean of its divisors is an integer number (3303277531).

Almost surely, 2^6606555061 is an apocalyptic number.

It is an amenable number.

6606555061 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606555061 is an equidigital number, since it uses as much as digits as its factorization.

6606555061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 6606555061 is about 81280.7176457000. The cubic root of 6606555061 is about 1876.3982516892.

The spelling of 6606555061 in words is "six billion, six hundred six million, five hundred fifty-five thousand, sixty-one".