1666040014 has 8 divisors (see below), whose sum is σ = 2499235200. Its totient is φ = 832961616.

The previous prime is 1666039987. The next prime is 1666040017. The reversal of 1666040014 is 4100406661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666040017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32787 + ... + 66385.

It is an arithmetic number, because the mean of its divisors is an integer number (312404400).

Almost surely, 2^1666040014 is an apocalyptic number.

1666040014 is a deficient number, since it is larger than the sum of its proper divisors (833195186).

1666040014 is a wasteful number, since it uses less digits than its factorization.

1666040014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58394.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1666040014 is about 40817.1534284301. The cubic root of 1666040014 is about 1185.4824870909.

Adding to 1666040014 its reverse (4100406661), we get a palindrome (5766446675).

The spelling of 1666040014 in words is "one billion, six hundred sixty-six million, forty thousand, fourteen".