1666000063 has 32 divisors (see below), whose sum is σ = 2076383232. Its totient is φ = 1301616000.

The previous prime is 1666000057. The next prime is 1666000069. The reversal of 1666000063 is 3600006661.

It is an interprime number because it is at equal distance from previous prime (1666000057) and next prime (1666000069).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1666000063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1665999995 and 1666000040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666000069) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3613653 + ... + 3614113.

It is an arithmetic number, because the mean of its divisors is an integer number (64886976).

Almost surely, 2^1666000063 is an apocalyptic number.

1666000063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1666000063 is a deficient number, since it is larger than the sum of its proper divisors (410383169).

1666000063 is a wasteful number, since it uses less digits than its factorization.

1666000063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1666000063 is about 40816.6640356607. The cubic root of 1666000063 is about 1185.4730112102.

The spelling of 1666000063 in words is "one billion, six hundred sixty-six million, sixty-three", and thus it is an aban number.