1066320205 has 8 divisors (see below), whose sum is σ = 1314167832. Its totient is φ = 830000448.

The previous prime is 1066320193. The next prime is 1066320253. The reversal of 1066320205 is 5020236601.

It can be written as a sum of positive squares in 4 ways, for example, as 161874729 + 904445476 = 12723^2 + 30074^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1066320205 - 2²¹ = 1064223053 is a prime.

It is a super-2 number, since 2×1066320205² = 2274077559182484050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066320205.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2881762 + ... + 2882131.

It is an arithmetic number, because the mean of its divisors is an integer number (164270979).

Almost surely, 2^1066320205 is an apocalyptic number.

It is an amenable number.

1066320205 is a deficient number, since it is larger than the sum of its proper divisors (247847627).

1066320205 is an equidigital number, since it uses as much as digits as its factorization.

1066320205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763935.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1066320205 is about 32654.5587169694. The cubic root of 1066320205 is about 1021.6352741941.

Adding to 1066320205 its reverse (5020236601), we get a palindrome (6086556806).

The spelling of 1066320205 in words is "one billion, sixty-six million, three hundred twenty thousand, two hundred five".