66814484 has 24 divisors (see below), whose sum is σ = 127800288. Its totient is φ = 30311840.

The previous prime is 66814457. The next prime is 66814519. The reversal of 66814484 is 48441866.

66814484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28667 + ... + 30909.

It is an arithmetic number, because the mean of its divisors is an integer number (5325012).

Almost surely, 2^66814484 is an apocalyptic number.

It is an amenable number.

66814484 is a deficient number, since it is larger than the sum of its proper divisors (60985804).

66814484 is a wasteful number, since it uses less digits than its factorization.

66814484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935 (or 2933 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 66814484 is about 8174.0127232590. The cubic root of 66814484 is about 405.7795967774.

The spelling of 66814484 in words is "sixty-six million, eight hundred fourteen thousand, four hundred eighty-four".