66447094 has 16 divisors (see below), whose sum is σ = 114022656. Its totient is φ = 28449000.

The previous prime is 66447041. The next prime is 66447103. The reversal of 66447094 is 49074466.

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, 18679 + ... + 21949.

It is an arithmetic number, because the mean of its divisors is an integer number (7126416).

Almost surely, 2^66447094 is an apocalyptic number.

66447094 is a deficient number, since it is larger than the sum of its proper divisors (47575562).

66447094 is a wasteful number, since it uses less digits than its factorization.

66447094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 66447094 is about 8151.5086947141. The cubic root of 66447094 is about 405.0344816448.

The spelling of 66447094 in words is "sixty-six million, four hundred forty-seven thousand, ninety-four".