1666366712 has 16 divisors (see below), whose sum is σ = 3153103800. Its totient is φ = 825539040.

The previous prime is 1666366711. The next prime is 1666366727. The reversal of 1666366712 is 2176636661.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666366711) 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 3 ways as a sum of consecutive naturals, for example, 954614 + ... + 956357.

Almost surely, 2^1666366712 is an apocalyptic number.

It is an amenable number.

1666366712 is a deficient number, since it is larger than the sum of its proper divisors (1486737088).

1666366712 is a wasteful number, since it uses less digits than its factorization.

1666366712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911086 (or 1911082 counting only the distinct ones).

The product of its digits is 326592, while the sum is 44.

The square root of 1666366712 is about 40821.1552016843. The cubic root of 1666366712 is about 1185.5599701129.

The spelling of 1666366712 in words is "one billion, six hundred sixty-six million, three hundred sixty-six thousand, seven hundred twelve".