66408043 has 12 divisors (see below), whose sum is σ = 72668568. Its totient is φ = 60652800.

The previous prime is 66408037. The next prime is 66408047. The reversal of 66408043 is 34080466.

It is not a de Polignac number, because 66408043 - 2⁹ = 66407531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66407996 and 66408014.

It is not an unprimeable number, because it can be changed into a prime (66408047) 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 11 ways as a sum of consecutive naturals, for example, 14368 + ... + 18418.

It is an arithmetic number, because the mean of its divisors is an integer number (6055714).

Almost surely, 2^66408043 is an apocalyptic number.

66408043 is a deficient number, since it is larger than the sum of its proper divisors (6260525).

66408043 is a wasteful number, since it uses less digits than its factorization.

66408043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174 (or 4161 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 66408043 is about 8149.1130192187. The cubic root of 66408043 is about 404.9551197537.

The spelling of 66408043 in words is "sixty-six million, four hundred eight thousand, forty-three".