1066505329 has 4 divisors (see below), whose sum is σ = 1066570740. Its totient is φ = 1066439920.

The previous prime is 1066505327. The next prime is 1066505339. The reversal of 1066505329 is 9235056601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9235056601 = 859 ⋅10750939.

It can be written as a sum of positive squares in 2 ways, for example, as 470022400 + 596482929 = 21680^2 + 24423^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066505329 - 2¹ = 1066505327 is a prime.

It is a super-2 number, since 2×1066505329² = 2274867233570796482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066505327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13707 + ... + 48175.

It is an arithmetic number, because the mean of its divisors is an integer number (266642685).

Almost surely, 2^1066505329 is an apocalyptic number.

It is an amenable number.

1066505329 is a deficient number, since it is larger than the sum of its proper divisors (65411).

1066505329 is an equidigital number, since it uses as much as digits as its factorization.

1066505329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65410.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 1066505329 is about 32657.3931752061. The cubic root of 1066505329 is about 1021.6943928540.

The spelling of 1066505329 in words is "one billion, sixty-six million, five hundred five thousand, three hundred twenty-nine".