1066317509 has 4 divisors (see below), whose sum is σ = 1100714880. Its totient is φ = 1031920140.

The previous prime is 1066317451. The next prime is 1066317523. The reversal of 1066317509 is 9057136601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1066317509 - 2⁸ = 1066317253 is a prime.

It is a super-2 number, since 2×1066317509² = 2274066059999930162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066317409) 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, 17198639 + ... + 17198700.

It is an arithmetic number, because the mean of its divisors is an integer number (275178720).

Almost surely, 2^1066317509 is an apocalyptic number.

It is an amenable number.

1066317509 is a deficient number, since it is larger than the sum of its proper divisors (34397371).

1066317509 is an equidigital number, since it uses as much as digits as its factorization.

1066317509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34397370.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 1066317509 is about 32654.5174363364. The cubic root of 1066317509 is about 1021.6344131860.

The spelling of 1066317509 in words is "one billion, sixty-six million, three hundred seventeen thousand, five hundred nine".