66408843 has 8 divisors (see below), whose sum is σ = 92395008. Its totient is φ = 42347624.

The previous prime is 66408761. The next prime is 66408877. The reversal of 66408843 is 34880466.

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

It is a cyclic number.

It is not a de Polignac number, because 66408843 - 2¹² = 66404747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66408893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481155 + ... + 481292.

It is an arithmetic number, because the mean of its divisors is an integer number (11549376).

Almost surely, 2^66408843 is an apocalyptic number.

66408843 is a deficient number, since it is larger than the sum of its proper divisors (25986165).

66408843 is a wasteful number, since it uses less digits than its factorization.

66408843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962473.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 66408843 is about 8149.1621041675. The cubic root of 66408843 is about 404.9567458760.

The spelling of 66408843 in words is "sixty-six million, four hundred eight thousand, eight hundred forty-three".