66468843 has 30 divisors (see below), whose sum is σ = 115510956. Its totient is φ = 37979928.

The previous prime is 66468823. The next prime is 66468847. The reversal of 66468843 is 34886466.

It is not a de Polignac number, because 66468843 - 2⁹ = 66468331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66468847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4405 + ... + 12342.

Almost surely, 2^66468843 is an apocalyptic number.

66468843 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

66468843 is a deficient number, since it is larger than the sum of its proper divisors (49042113).

66468843 is a wasteful number, since it uses less digits than its factorization.

66468843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16773 (or 16757 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 66468843 is about 8152.8426330943. The cubic root of 66468843 is about 405.0786678460.

The spelling of 66468843 in words is "sixty-six million, four hundred sixty-eight thousand, eight hundred forty-three".