1040666566 has 8 divisors (see below), whose sum is σ = 1614827520. Its totient is φ = 502390728.

The previous prime is 1040666513. The next prime is 1040666569. The reversal of 1040666566 is 6656660401.

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 (1040666569) 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, 8971206 + ... + 8971321.

It is an arithmetic number, because the mean of its divisors is an integer number (201853440).

Almost surely, 2^1040666566 is an apocalyptic number.

1040666566 is a deficient number, since it is larger than the sum of its proper divisors (574160954).

1040666566 is a wasteful number, since it uses less digits than its factorization.

1040666566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17942558.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 1040666566 is about 32259.3640048901. The cubic root of 1040666566 is about 1013.3758119552.

The spelling of 1040666566 in words is "one billion, forty million, six hundred sixty-six thousand, five hundred sixty-six".