66548943 has 12 divisors (see below), whose sum is σ = 96239520. Its totient is φ = 44313696.

The previous prime is 66548941. The next prime is 66548947. The reversal of 66548943 is 34984566.

66548943 is a `hidden beast` number, since 66 + 548 + 9 + 43 = 666.

It is not a de Polignac number, because 66548943 - 2¹ = 66548941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66548941) 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 11 ways as a sum of consecutive naturals, for example, 4698 + ... + 12456.

It is an arithmetic number, because the mean of its divisors is an integer number (8019960).

Almost surely, 2^66548943 is an apocalyptic number.

66548943 is a deficient number, since it is larger than the sum of its proper divisors (29690577).

66548943 is a wasteful number, since it uses less digits than its factorization.

66548943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718 (or 8715 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 66548943 is about 8157.7535510703. The cubic root of 66548943 is about 405.2413193728.

The spelling of 66548943 in words is "sixty-six million, five hundred forty-eight thousand, nine hundred forty-three".