1066798564 has 12 divisors (see below), whose sum is σ = 2010505084. Its totient is φ = 492368544.

The previous prime is 1066798549. The next prime is 1066798571. The reversal of 1066798564 is 4658976601.

It can be written as a sum of positive squares in 2 ways, for example, as 67732900 + 999065664 = 8230^2 + 31608^2 .

It is a super-2 number, since 2×1066798564² = 2276118352304924192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 20515357 = 1066798564 / (1 + 0 + 6 + 6 + 7 + 9 + 8 + 5 + 6 + 4).

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 10257627 + ... + 10257730.

Almost surely, 2^1066798564 is an apocalyptic number.

It is an amenable number.

1066798564 is a deficient number, since it is larger than the sum of its proper divisors (943706520).

1066798564 is a wasteful number, since it uses less digits than its factorization.

1066798564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20515374 (or 20515372 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 1066798564 is about 32661.8824319726. The cubic root of 1066798564 is about 1021.7880223601.

The spelling of 1066798564 in words is "one billion, sixty-six million, seven hundred ninety-eight thousand, five hundred sixty-four".