1066645577 has 2 divisors, whose sum is σ = 1066645578. Its totient is φ = 1066645576.

The previous prime is 1066645553. The next prime is 1066645633. The reversal of 1066645577 is 7755466601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 847042816 + 219602761 = 29104^2 + 14819^2 .

It is an emirp because it is prime and its reverse (7755466601) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066645577 is a prime.

It is a super-2 number, since 2×1066645577² = 2275465573867325858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066645507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533322788 + 533322789.

It is an arithmetic number, because the mean of its divisors is an integer number (533322789).

Almost surely, 2^1066645577 is an apocalyptic number.

It is an amenable number.

1066645577 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066645577 is an equidigital number, since it uses as much as digits as its factorization.

1066645577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The square root of 1066645577 is about 32659.5403672495. The cubic root of 1066645577 is about 1021.7391759760.

The spelling of 1066645577 in words is "one billion, sixty-six million, six hundred forty-five thousand, five hundred seventy-seven".