66444934 has 16 divisors (see below), whose sum is σ = 103716288. Its totient is φ = 31899712.

The previous prime is 66444929. The next prime is 66444949. The reversal of 66444934 is 43944466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1687 + ... + 11650.

It is an arithmetic number, because the mean of its divisors is an integer number (6482268).

Almost surely, 2^66444934 is an apocalyptic number.

66444934 is a deficient number, since it is larger than the sum of its proper divisors (37271354).

66444934 is a wasteful number, since it uses less digits than its factorization.

66444934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13439.

The product of its digits is 248832, while the sum is 40.

The square root of 66444934 is about 8151.3762028261. The cubic root of 66444934 is about 405.0300927698.

The spelling of 66444934 in words is "sixty-six million, four hundred forty-four thousand, nine hundred thirty-four".