66944468 has 24 divisors (see below), whose sum is σ = 119599200. Its totient is φ = 32777888.

The previous prime is 66944417. The next prime is 66944503. The reversal of 66944468 is 86444966.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98546 + ... + 99222.

It is an arithmetic number, because the mean of its divisors is an integer number (4983300).

Almost surely, 2^66944468 is an apocalyptic number.

It is an amenable number.

66944468 is a deficient number, since it is larger than the sum of its proper divisors (52654732).

66944468 is a wasteful number, since it uses less digits than its factorization.

66944468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159 (or 1157 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The square root of 66944468 is about 8181.9599119037. The cubic root of 66944468 is about 406.0425671434.

The spelling of 66944468 in words is "sixty-six million, nine hundred forty-four thousand, four hundred sixty-eight".