1666707027 has 8 divisors (see below), whose sum is σ = 2222697360. Its totient is φ = 1110927360.

The previous prime is 1666707011. The next prime is 1666707043. The reversal of 1666707027 is 7207076661.

It is an interprime number because it is at equal distance from previous prime (1666707011) and next prime (1666707043).

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

It is not a de Polignac number, because 1666707027 - 2⁴ = 1666707011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1666707027.

It is not an unprimeable number, because it can be changed into a prime (1666707827) 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 7 ways as a sum of consecutive naturals, for example, 33174 + ... + 66587.

It is an arithmetic number, because the mean of its divisors is an integer number (277837170).

Almost surely, 2^1666707027 is an apocalyptic number.

1666707027 is a deficient number, since it is larger than the sum of its proper divisors (555990333).

1666707027 is an equidigital number, since it uses as much as digits as its factorization.

1666707027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105333.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 1666707027 is about 40825.3233545063. The cubic root of 1666707027 is about 1185.6406719127.

The spelling of 1666707027 in words is "one billion, six hundred sixty-six million, seven hundred seven thousand, twenty-seven".