1066206481 has 2 divisors, whose sum is σ = 1066206482. Its totient is φ = 1066206480.

The previous prime is 1066206461. The next prime is 1066206487. The reversal of 1066206481 is 1846026601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649434256 + 416772225 = 25484^2 + 20415^2 .

It is an emirp because it is prime and its reverse (1846026601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1066206481 - 2⁹ = 1066205969 is a prime.

It is a super-2 number, since 2×1066206481² = 2273592520252806722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066206487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533103240 + 533103241.

It is an arithmetic number, because the mean of its divisors is an integer number (533103241).

Almost surely, 2^1066206481 is an apocalyptic number.

It is an amenable number.

1066206481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066206481 is an equidigital number, since it uses as much as digits as its factorization.

1066206481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1066206481 is about 32652.8173516467. The cubic root of 1066206481 is about 1021.5989534654.

The spelling of 1066206481 in words is "one billion, sixty-six million, two hundred six thousand, four hundred eighty-one".