1666530005 has 8 divisors (see below), whose sum is σ = 2285526912. Its totient is φ = 1142763408.

The previous prime is 1666529999. The next prime is 1666530011. The reversal of 1666530005 is 5000356661.

It is an interprime number because it is at equal distance from previous prime (1666529999) and next prime (1666530011).

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 1666530005 - 2⁸ = 1666529749 is a prime.

It is a Duffinian number.

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, 23807537 + ... + 23807606.

It is an arithmetic number, because the mean of its divisors is an integer number (285690864).

Almost surely, 2^1666530005 is an apocalyptic number.

It is an amenable number.

1666530005 is a deficient number, since it is larger than the sum of its proper divisors (618996907).

1666530005 is an equidigital number, since it uses as much as digits as its factorization.

1666530005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47615155.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1666530005 is about 40823.1552553205. The cubic root of 1666530005 is about 1185.5986945464.

Adding to 1666530005 its reverse (5000356661), we get a palindrome (6666886666).

The spelling of 1666530005 in words is "one billion, six hundred sixty-six million, five hundred thirty thousand, five".