845126666 has 8 divisors (see below), whose sum is σ = 1268423364. Its totient is φ = 422318880.

The previous prime is 845126663. The next prime is 845126699. The reversal of 845126666 is 666621548.

845126666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 495997441 + 349129225 = 22271^2 + 18685^2 .

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

It is not an unprimeable number, because it can be changed into a prime (845126663) 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, 117875 + ... + 124838.

Almost surely, 2^845126666 is an apocalyptic number.

845126666 is a deficient number, since it is larger than the sum of its proper divisors (423296698).

845126666 is a wasteful number, since it uses less digits than its factorization.

845126666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244456.

The product of its digits is 414720, while the sum is 44.

The square root of 845126666 is about 29071.0623472896. The cubic root of 845126666 is about 945.4544312707.

The spelling of 845126666 in words is "eight hundred forty-five million, one hundred twenty-six thousand, six hundred sixty-six".