1066544423 has 8 divisors (see below), whose sum is σ = 1283061120. Its totient is φ = 866066040.

The previous prime is 1066544417. The next prime is 1066544459. The reversal of 1066544423 is 3244456601.

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

It is not a de Polignac number, because 1066544423 - 2¹² = 1066540327 is a prime.

It is a super-2 number, since 2×1066544423² = 2275034012464805858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066544473) 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 7 ways as a sum of consecutive naturals, for example, 4009433 + ... + 4009698.

It is an arithmetic number, because the mean of its divisors is an integer number (160382640).

Almost surely, 2^1066544423 is an apocalyptic number.

1066544423 is a deficient number, since it is larger than the sum of its proper divisors (216516697).

1066544423 is an equidigital number, since it uses as much as digits as its factorization.

1066544423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019157.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 1066544423 is about 32657.9917171892. The cubic root of 1066544423 is about 1021.7068765024.

The spelling of 1066544423 in words is "one billion, sixty-six million, five hundred forty-four thousand, four hundred twenty-three".