1066264481 has 4 divisors (see below), whose sum is σ = 1066885764. Its totient is φ = 1065643200.

The previous prime is 1066264469. The next prime is 1066264519. The reversal of 1066264481 is 1844626601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 460317025 + 605947456 = 21455^2 + 24616^2 .

It is not a de Polignac number, because 1066264481 - 2⁶ = 1066264417 is a prime.

It is a super-2 number, since 2×1066264481² = 2273839886884398722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066264181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308060 + ... + 311501.

It is an arithmetic number, because the mean of its divisors is an integer number (266721441).

Almost surely, 2^1066264481 is an apocalyptic number.

It is an amenable number.

1066264481 is a deficient number, since it is larger than the sum of its proper divisors (621283).

1066264481 is an equidigital number, since it uses as much as digits as its factorization.

1066264481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621282.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 1066264481 is about 32653.7054712019. The cubic root of 1066264481 is about 1021.6174776025.

The spelling of 1066264481 in words is "one billion, sixty-six million, two hundred sixty-four thousand, four hundred eighty-one".