2066776597 has 2 divisors, whose sum is σ = 2066776598. Its totient is φ = 2066776596.

The previous prime is 2066776589. The next prime is 2066776631. The reversal of 2066776597 is 7956776602.

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., 2002920516 + 63856081 = 44754^2 + 7991^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066776597 - 2³ = 2066776589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066776507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033388298 + 1033388299.

It is an arithmetic number, because the mean of its divisors is an integer number (1033388299).

Almost surely, 2^2066776597 is an apocalyptic number.

It is an amenable number.

2066776597 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066776597 is an equidigital number, since it uses as much as digits as its factorization.

2066776597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The square root of 2066776597 is about 45461.8147130094. The cubic root of 2066776597 is about 1273.7900292420.

The spelling of 2066776597 in words is "two billion, sixty-six million, seven hundred seventy-six thousand, five hundred ninety-seven".